Hey all I am hoping someone can help me. I have a 1996 XR600R and it has been flawless up until now. When the bike is Idling or I am just down shifting, the bike makes an obvious clunk or the same sound you might hear as if clutch isn't disengaging well. Mostly in 1st gear. When I am at a stop sign and shift down into 1st it hits hard and the bike jerks just a little bit. ANY IDEAS what is happening???? Thanks in advance!