diff --git a/prompting/llms/model_manager.py b/prompting/llms/model_manager.py
index abff765e7..ed1fd107d 100644
--- a/prompting/llms/model_manager.py
+++ b/prompting/llms/model_manager.py
@@ -233,7 +233,7 @@ async def cleanup(self):
 class AsyncModelScheduler(AsyncLoopRunner):
     llm_model_manager: ModelManager
     mp_lock: AcquirerProxy
-    interval: int = 1200
+    interval: int = 3600
     scoring_queue: list | None = None
     memory_error: MemoryError | None = None
 
diff --git a/prompting/rewards/exact_match.py b/prompting/rewards/exact_match.py
index b1b21c66a..b97314193 100644
--- a/prompting/rewards/exact_match.py
+++ b/prompting/rewards/exact_match.py
@@ -14,14 +14,14 @@
 
 shared_settings = settings.shared_settings
 
+MIN_VERIFY_TOKENS = 10
+MAX_VERIFY_TOKENS = 30
 NO_EOS_PENALTY = -0.1
 INCORRECT_PENALTY = -2
 MIN_SMOOTH_PENALTY_SCALE = 0.6
 MIN_TIME_PENALTY_SCALE = 0.3
-VERIFICATION_THRESH_CONTAINS = 0.92
-VERIFICATION_THRESH_SIM = 0.90
-MIN_VERIFY_TOKENS = 10
-MAX_VERIFY_TOKENS = 30
+VERIFICATION_THRESH_CONTAINS = 0.96
+VERIFICATION_THRESH_SIM = 0.86
 
 
 class LogitsRewardModel(BaseRewardModel):
@@ -93,11 +93,15 @@ async def reward(  # noqa: C901
                 scores_contains: list[float] = []
                 for idx in verify_indices:
                     check_idx = min(idx, completion_length)
+                    messages = task.task_messages.copy()
+                    to_complete = "".join(chunks[:check_idx])
+                    if to_complete:
+                        messages.extend([{"role": "assistant", "content": to_complete}])
                     verification_logits, _ = await model_manager.generate_logits(
                         model=task.llm_model_id,
-                        messages=task.task_messages + [{"role": "assistant", "content": "".join(chunks[:check_idx])}],
+                        messages=messages,
                         sampling_params=sampling_parameters,
-                        continue_last_message=True,
+                        continue_last_message=len(to_complete) > 0,
                     )
                     if check_idx < eos_idx:
                         if not chunk_dicts_raw[check_idx].choices[0].logprobs:
@@ -126,7 +130,6 @@ async def reward(  # noqa: C901
 
                 score_sim_mean = float(np.mean(scores_sim))
                 score_contains_mean = float(np.mean(scores_contains))
-                logger.debug(f"Scores: {score_sim_mean}; {score_contains_mean}")
 
                 if score_sim_mean < VERIFICATION_THRESH_SIM:
                     raise ValueError(f"Logits similarity mean score is below threshold: {score_sim_mean:.2f}")
@@ -181,9 +184,12 @@ async def reward(  # noqa: C901
 
     @staticmethod
     def sample_verification_indices(completion_length: int) -> list[int]:
-        """Sample random indices for verification, always add eos_token index."""
-        num_verify = int(np.clip(completion_length, 1, MAX_VERIFY_TOKENS))
-        verify_indices = random.sample(range(completion_length), num_verify)
+        """Sample random indices for verification, always add 0 and eos_token index."""
+        # Sample indices without first and last index.
+        num_verify = int(np.clip(completion_length, 1, MAX_VERIFY_TOKENS)) - 2
+        verify_indices = random.sample(range(1, completion_length - 1), num_verify)
+        # Add first index.
+        verify_indices.append(0)
         # Add eos_token index.
         verify_indices.append(completion_length)
         verify_indices.sort()
diff --git a/prompting/tasks/task_registry.py b/prompting/tasks/task_registry.py
index 879f07297..c16a4c83b 100644
--- a/prompting/tasks/task_registry.py
+++ b/prompting/tasks/task_registry.py
@@ -13,7 +13,6 @@
 from prompting.tasks.inference import InferenceRewardConfig, InferenceTask
 from prompting.tasks.MSRv2_task import MSRv2RewardConfig, MSRv2Task
 from prompting.tasks.programming_task import ProgrammingRewardConfig, ProgrammingTask
-from prompting.tasks.qa import QARewardConfig, WebQuestionAnsweringTask
 from prompting.tasks.web_retrieval import WebRetrievalRewardConfig, WebRetrievalTask
 from shared.base import BaseDataset
 
@@ -33,27 +32,21 @@ def __hash__(self):
 class TaskRegistry(BaseModel):
     task_configs: ClassVar[list[TaskConfig]] = [
         TaskConfig(task=MSRv2Task, probability=0.05, datasets=[DDGDataset], reward_model=MSRv2RewardConfig),
-        TaskConfig(
-            task=WebQuestionAnsweringTask,
-            probability=0.05,
-            datasets=[DDGDataset],
-            reward_model=QARewardConfig,
-        ),
         TaskConfig(
             task=InferenceTask,
-            probability=0.40,
+            probability=0.45,
             datasets=[SN13Dataset],
             reward_model=InferenceRewardConfig,
         ),
         TaskConfig(
             task=ProgrammingTask,
-            probability=0.20,
+            probability=0.10,
             datasets=[HuggingFaceGithubDataset],
             reward_model=ProgrammingRewardConfig,
         ),
         TaskConfig(
             task=WebRetrievalTask,
-            probability=0.3,
+            probability=0.40,
             datasets=[DDGDataset],
             reward_model=WebRetrievalRewardConfig,
         ),
diff --git a/tests/prompting/rewards/test_exact_match.py b/tests/prompting/rewards/test_exact_match.py
index eb670be25..8a40c5042 100644
--- a/tests/prompting/rewards/test_exact_match.py
+++ b/tests/prompting/rewards/test_exact_match.py
@@ -303,10 +303,10 @@ def test_fastest_timing_various_cases(values, expected):
 def test_sample_verification_indices_properties(completion_length):
     indices = LogitsRewardModel.sample_verification_indices(completion_length)
 
-    # Compute expected number of sampled tokens (before adding EOS)
-    expected_k = int(np.clip(completion_length, 1, MAX_VERIFY_TOKENS)) + 1
+    # Compute expected number of sampled tokens with first and eos indices.
+    expected_k = int(np.clip(completion_length, 1, MAX_VERIFY_TOKENS))
 
-    # The result should have expected_k samples plus one EOS index
+    # The result should have expected_k samples plus one EOS index.
     assert isinstance(indices, list)
     assert len(indices) == expected_k
     assert indices == sorted(indices)