So I picked up my 2012 xt660x with only 800 miles on the clock toady and I'm loving it so far. I'm not even sure if this is a problem but changing gear makes quite a loud clunk sound. My old WR250x did the same thing but only when downshifting into first. The xt660x seems to do for every gear. Is this normal? Is it because the gearbox isn't fully broken in yet? Cheers guys.