833 Transmission won't disengage at stop after 100 miles.

Heat? I didn't know I was supposed to heat it... lol.
Take a look at the pin, on the inboard end of the Z-bar, where the adjuster-rod pivots on. If that pin is not at right angles to the direction of adjuster rod travel, it will tend to bind and possibly kick the clip off.
As long as you keep that in mind, you can bend that lever,to get the pushrod to travel in the proper fashion.

If the Z-bar spans the pivots, it should be the right one. Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists