diff --git a/scripts/cnode-helper-scripts/cntools.library b/scripts/cnode-helper-scripts/cntools.library
index 3d25bd931..70589226b 100644
--- a/scripts/cnode-helper-scripts/cntools.library
+++ b/scripts/cnode-helper-scripts/cntools.library
@@ -18,6 +18,7 @@ CNTOOLS_MINOR_VERSION=1
 CNTOOLS_PATCH_VERSION=0
 
 CNTOOLS_VERSION="${CNTOOLS_MAJOR_VERSION}.${CNTOOLS_MINOR_VERSION}.${CNTOOLS_PATCH_VERSION}"
+DUMMYFEE=20000
 
 ############################################################
 # Default config values                                    #
@@ -2074,7 +2075,7 @@ registerStakeWallet() {
     "${script_args[@]}"
     --tx-out "${base_addr}+0${assets_tx_out}"
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     --certificate-file "${stake_cert_file}"
     --out-file "${TMP_DIR}"/tx0.tmp
   )
@@ -2200,7 +2201,7 @@ deregisterStakeWallet() {
     "${script_args[@]}"
     --tx-out "${base_addr}+0${assets_tx_out}"
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     --certificate-file "${stake_dereg_file}"
     --out-file "${TMP_DIR}"/tx0.tmp
   )
@@ -2327,7 +2328,7 @@ sendAssets() {
     ${tx_in}
     "${script_args[@]}"
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     ${metafile_param}
     --out-file "${TMP_DIR}"/tx0.tmp
   )
@@ -2479,7 +2480,7 @@ delegate() {
     "${script_args[@]}"
     --tx-out "${base_addr}+0${assets_tx_out}"
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     --certificate-file "${pool_delegcert_file}"
     --out-file "${TMP_DIR}"/tx0.tmp
   )
@@ -2598,7 +2599,7 @@ withdrawRewards() {
     --tx-out "${base_addr}+0${assets_tx_out}"
     --withdrawal ${reward_addr}+${reward_lovelace}
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     --out-file "${TMP_DIR}"/tx0.tmp
   )
 
@@ -2722,7 +2723,7 @@ registerPool() {
     "${script_args[@]}"
     --tx-out "${base_addr}+0${assets_tx_out}"
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     --certificate-file "${pool_regcert_file}"
     --out-file "${TMP_DIR}"/tx0.tmp
   )
@@ -2874,7 +2875,7 @@ modifyPool() {
     "${script_args[@]}"
     --tx-out "${base_addr}+0${assets_tx_out}"
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     --certificate-file "${pool_regcert_file}"
     --out-file "${TMP_DIR}"/tx0.tmp
   )
@@ -3022,7 +3023,7 @@ deRegisterPool() {
     "${script_args[@]}"
     --tx-out "${addr}+0${assets_tx_out}"
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     --certificate-file "${pool_deregcert_file}"
     --out-file "${TMP_DIR}"/tx0.tmp
   )
@@ -3258,7 +3259,7 @@ sendMetadata() {
     "${script_args[@]}"
     --tx-out "${addr}+0${assets_tx_out}"
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     ${metafile_param}
     --out-file "${TMP_DIR}"/tx0.tmp
   )
@@ -3382,7 +3383,7 @@ mintAsset() {
     --mint-script-file "${policy_script_file}"
     ${metafile_param}
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     --out-file "${TMP_DIR}"/tx0.tmp
   )
 
@@ -3514,7 +3515,7 @@ burnAsset() {
     --mint-script-file "${policy_script_file}"
     ${metafile_param}
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     --out-file "${TMP_DIR}"/tx0.tmp
   )
 
@@ -3618,7 +3619,6 @@ calcMinFee() {
     --tx-body-file "$1"
     --tx-in-count $2
     --tx-out-count $3
-    ${NETWORK_IDENTIFIER}
     --witness-count $4
     --byron-witness-count 0
     --protocol-params-file "${TMP_DIR}"/protparams.json
@@ -4028,7 +4028,7 @@ submitPoll() {
     "${script_args[@]}"
     --tx-out "${addr}+0${assets_tx_out}"
     --invalid-hereafter ${ttl}
-    --fee 0
+    --fee ${DUMMYFEE}
     ${metafile_param}
     --required-signer-hash "${POOL_ID_HASH}"
     --out-file "${TMP_DIR}"/tx0.tmp