Top photo is the output shaft, and yes I have seen the black second gear in a bike that was jumping out of second at only 800kms, the photo below is the tortional damper, make sure bearings are replaced in this before it goes back together. IMO if you have seen the input and output shafts no way would they bend. They are well supported by bearings that are housed in the cases, strip the tortional damper and check it. Warp from the top photo if we could see further down the case that bearing tortional damper slots through another hole in the case and the two gears mesh to provide drive, wish I could inspect it in person. :wink: