was on the track yesterday, all was fine for about the first hour or so and then I noticed that my bike was really hard to shift into 3rd gear. It would go from first to second easy as usual and then when I tried going into third, it just wouldn’t shift until about my 5th or 6th attempt but I was slowing right down. I kept trying and trying and I ended up going off of a jump and when I came back down I felt something In the bottom up kinda make a clunk feel and then it would shift normally. Shortly after it had issues shifting into third again. Not sure what would cause this but maybe somebody has got some ideas??