Mopar A833 - 70 Duster

Not saying this is what it is but there is a slight adjustment on the reverse lockout by moving the side cover. There was a Mopar training slide show posted just yesterday that showed the lockout. Let me see if I can find it. Here it is. Very informative. I think the cover adjustment is toward the end of the vid.

Learning about the A833 - old mopar tech video -Sticky?
Holy crap.....I called the shop this morning that rebuilt my trans and the owner was stumped. He was asking me if I tried this and that and I was like of course. I'm not a dumbass......Anyways I watch the video about 3 or 4 times and during my lunch break since I am still working from home I got under the car. Drained my new gear oil and loosened the side cover bolts. Put my adjustable wrench on the reverse selector and it moves freely now and goes into reverse. I tightened down the side cover slowly and in a crossing pattern tested reverse after every bolt and its fixed. So happy I don't have to get a tow or take the trans back out. The shop said he would call me back which he hasn't yet. Thanks a lot of the info Mike. Saved me. Stay safe and healthy.