I am installing new door panels in my 1985. Is there anyone who has performed this who could enlighten me to the trick for getting the lock slide back into its original position? It doesn't seem to be able to go far enough to one side that I can get it back in its "front" of the trim cover spot. Is there a trick for removing the black thumb slide and just dealing with the rod and reinstalling the thumb or finger pull? Will I need another one as this is a disposable piece? I just knew taking the old panel off this was going to be a PITA. Probably why the door panel backing plastic was split down the middle. Any help would be greatly appreciated.