I have 8900 miles on the bike, I put a new primary clutch on and the low gear will pop out of gear while driving make a grinding sound and pop back in over and over. High gear is fine, but under a load it will make a popping noise in the rear end. It makes the popping noise in reverse under a load as well. Pretty sure it’s the tranny but just want to see if anyone had this happen? it may be the detent gears or something else?