Well, tried everything that I know of. chain looks new along with exam of both sprockets as well as the cush rubbers. It's a gen 2. Tested chain link for link. Took it to suzuki dealer here in Picayune and mechanic said he would have to drop engine to see what the problem is internally.lease: I still hear the more like a clunk when letting clutch out coming from the left side by my foot. Does it about every 3rd let out while easing in to park. I can also hear it not so well at highway speeds when I let off of gas and then get back on gas and not rough either. My neighbor from across street says he can hear it when I'm moving it to park,so it's not a light click. It's more like metal to metal clack. Man, I'm sick. I love this bike. I bought this bike used and I'm the 3rd owner with 9000 on the odo. It's like the slack is taken up on the slight amount of play before the trans engages and instead of a soft engagement, it's hard and makes the noise. I,ll make a utube vid of it and post the link. Otherwise, bike rides good engine is great. I've been trying to ignore this, but it doesn,t sound or feel right. My 2002 busa I had never did this. The mechanic said previous owner probably raw hided it. Any comments welcome, thanks