While installing my solenoids for my kit (old kit) I noted that there are 2 return springs on the factory latch. With no door handle, the "extra" spring on the outside of the latch can be remove. This helped considerably with my solenoids. Would also make it significantly easier to use the keylock to activate the door latch. As speedster stated above, it is a pretty simple setup. wouldn't hurt to pull a door panel and take a good look at things.
pic shows rod pulling down on latch. Your install will have the rod pointed up and connected to the arm of the keylock. Turn the key to push the rod down and door opens.