4 spd. pops out of gear.

The best way to tighten up an A833 is to replace bearings, bushing, small parts kit, and the clustershaft. Next look at the synchro teeth on the outer synchro sleeves and the synchro teeth on the gears. Sometmes they are just too Goobered up and need to be replaced. Next, the brass sychro stop rings. Jamie has put out a great inexpensive book if you want to tear into it yourself. It is amazing to me how people can ruin a Mopar 4 speed...