How can I difference between bad tranny synchros vs shifter adjustment? After driving around this morning, it wouldn't go into reverse. I also did a lot of stop and go testing and if not real careful going from 1st to 2nd it wants to go to 4th. Sloppy gear selection on most gears. Wondering if there is adjustments on the shifter assembly or bad syncros. If rebuilding tranny is required this car might be up for parting it out. It's "crazy" what a used tranny cost!