diff --git a/cuckoo-miner/src/cuckoo_sys/plugins/CMakeLists.txt b/cuckoo-miner/src/cuckoo_sys/plugins/CMakeLists.txt
index f0d8376..39c1078 100644
--- a/cuckoo-miner/src/cuckoo_sys/plugins/CMakeLists.txt
+++ b/cuckoo-miner/src/cuckoo_sys/plugins/CMakeLists.txt
@@ -199,9 +199,11 @@ endif()
 
 ### AR CUDA TARGETS #########################################
 
-set (AR2_CUDA_SRC cuckoo/src/cuckaroom/kernel.cuh cuckoo/src/cuckaroom/mean.cu ${BLAKE_2B} )
+set (AR2_CUDA_SRC cuckoo/src/cuckaroom/meaner.cu ${BLAKE_2B} )
+set (AR2_CUDA_SRC2 cuckoo/src/cuckaroom/kernel.cuh cuckoo/src/cuckaroom/mean.cu ${BLAKE_2B} )
 
 if (NOT SKIP_CUCKAROOM_GPU)
-  build_cuda_target("${AR2_CUDA_SRC}" cuckaroom_cuda_19 "-DXBITS=1 -DEPS_A=4 -DEPS_B=3 -DIDXSHIFT=8 -DEDGEBITS=19")
   build_cuda_target("${AR2_CUDA_SRC}" cuckaroom_cuda_29 "-DEDGEBITS=29")
+  build_cuda_target("${AR2_CUDA_SRC2}" cuckaroom_old_cuda_29 "-DEDGEBITS=29")
+  build_cuda_target("${AR2_CUDA_SRC2}" cuckaroom_cuda_19 "-DXBITS=1 -DEPS_A=4 -DEPS_B=3 -DIDXSHIFT=8 -DEDGEBITS=19")
 endif()
diff --git a/cuckoo-miner/src/cuckoo_sys/plugins/cuckoo b/cuckoo-miner/src/cuckoo_sys/plugins/cuckoo
index f130df8..6000e41 160000
--- a/cuckoo-miner/src/cuckoo_sys/plugins/cuckoo
+++ b/cuckoo-miner/src/cuckoo_sys/plugins/cuckoo
@@ -1 +1 @@
-Subproject commit f130df876a8d97d7e6056a330068787a8fb430cc
+Subproject commit 6000e41bf52627b4cff798bc6d17fbecbc9866f1
diff --git a/grin-miner.toml b/grin-miner.toml
index 70dda66..d755f5b 100644
--- a/grin-miner.toml
+++ b/grin-miner.toml
@@ -104,12 +104,10 @@ nthreads = 4
 # currently requires 6GB GPU memory
 #[[mining.miner_plugin_config]]
 #plugin_name = "cuckaroom_cuda_29"
-# or, prior to 2nd hardfork: plugin_name = "cuckarood_cuda_29"
 #[mining.miner_plugin_config.parameters]
 #device = 0
 #cpuload = 1
-#ntrims = 399
-# or, prior to 2nd hardfork: ntrims = 31
+#ntrims = 15
 #genablocks = 1024
 #recoverblocks = 2048
 #recovertpb = 256