Replace the animations of combat techniques (Resident Evil 5)

Replaced a standard technique Chris Stomp( finish off the enemy on the ground) the character of Josh. It works ,but not completely. The strike does damage. Chris like all the time misses. It's weird because the rest of the changed work without mistakes. I changed the punching and the finishing blow in tandem to the Beats of Josh, kick to kick Wesker Mustang ckik, the rebound rear left standard punch Chris.What to do?