Viper 790xv Door Locks Problem

i have a viper 790xv alarm system i installed, i have a 1999 honda accord(4 door), one of my doors has an aftermarket actuator installed(factory one had died on me) and the other 3 doors still have the factory door actuators, whenever i'm tryin to lock/unlock sometimes the doors lock/unlock sometimes they dont, now i've gotten to the point where the door that has the aftermarket actuator doesn't lock at all, i've got the unlock/lock wires(blue/green) from the alarm brain wired str8 to my factory unlock/unlock wires,  i am wondering would the DEI 451 module solve my problem. THZ

P.S. the remote does respond that the alarm has armed/disarmed itself so i know the remote is communicating with the brain.

P.S. all other functions of the alarm system works except the doors