i have an HD eaton posi, if i did it over again i’d go spool, or in your case a locker is fine. If i’m not mistaken it does not disengage while your going straight or thru gears as you say, it should only disengage going around turns and NOT jump at all, if its jumping its not disengaging. The spool on the other hand might jump or chrip the tire who cares tho jussssssst do it!!