Why is your crawl box in the front? You are putting so much torque through the shaft, suprised all of you have not have not blown bearings or snapped shafts. The shaft is torquing so much it is putting pressure for and aft on the shaft and moving the shift forks and thats why you are popping out of gear. Crawl box always goes in back!! HD detents are just a band aid and don't fix the actual problem.
