I have a 04 R1 recently had my chain snap came back blew a hole the size of a half dollar into my case. It went threw the fail safe guard that Yamaha had installed on the outside of motor by the stator. Had a small shop install the new case and this took several months. Finally the day came where I got the call and bike only needed oil coolant and few gaskets. Bought them and dropped them off. Waited two weeks before calling the shop and no one picked up. Finally after a month showed up to there shop with a tow truck. And was told that the bike for some reason was making a knocking noise. And over my anger I over heared a piece of what he was saying which was he “thinks” it has something to do with the stator never telling me what part of the stator. So I took my bike back home and took the stator apart and everything looked in tact no markings on flywheel. I then had another technician friend of mine that works at a tuning shop look at it. And listen to noise. He also said sounds like something might be warped in the stator. Ok!??! So I spent $330 on new flywheel and gasket $60 on new magneto and $45 on the three main bearings that are in contact with stator, lastly bought new bolts for the stator cover with washers. . All these parts were installed and torqued down. Did another oil Change on bike and started it. Still to my disbelief making the same noise but the noise, of this makes sense, doesn’t sound very deep at all. It’s more or less on the outside of motor somewhere. I can’t figure this out and don’t have any more money to be spending on technicians just to tell me it’s a part that was never broke in first place. I can upload videos or sound clips of what noise I’m talking about if any one out there has any clues or real help please let me know. Already spent $2090.00 more then I wanted to.