New member looking to be a long time member also looking for some guidance. Short story for those who hate to read, I had new valves installed and got the bike bike and it was very noisy. I can't seem to find what the noise is. Video of noise: For those of you who want to back story, here it is: I bought a 2000 drz 400 a few months ago. It wasn't pretty, but had a ton of money in quality aftermarket modifications. Modifications that may be worth mentioning on this issue are hot cams and a high compression piston. Any how, I bought it and it was a terrible chore to get started, but once started it ran well, and would restart when warm. I rode it for about 4 hours one day, that's it. After doing research I found that tight valves were most likely the issue for the hard starting. I've adjusted valves before on my DR650 a couple other bikes, but I've never had to deal with the shim type adjustment. I didn't feel like messing with it and took it to a friend of a friend who races bikes and is a mechanic by trade. He told me that valves were pretty worn and recommended new valves be installed, which I allowed. After getting it back it sounded like the video above. Note it didn't sound like this before, but I will admit it started easy. I told him it didn't sound right and asked him if he could check over his work. He came and got it and said it sounded like the noise is coming from the bottom end and he advised to tear into the bottom of the motor. I honestly didn't think it was coming from the bottom end and it wasn't sounding like that before so I went it picked it up and decided to check it out for myself. I've checked the timing and it looks correct. I checked his valve clearances and the intake is perfect at .15mm and the exhaust is just out of spec tight at .18mm, but that shouldn't be causing this noise. It still has the automatic cam chain tensioner and it seems fine. I put a scope down the spark plug to check to see if any valves had touched the piston, but couldn't see that well, but I don't believe they have. I took both engine covers off to look for debris or obvious issues, but couldn't see anything. My kickstarter gear somehow fell out when I took my side case off so I need to figure out how that goes back in. As of now that's where I'm at. My next step was going to be to button it up and see if the noise is still present, but I'm sure it will be as I haven't made any changes. Any advise on where to go from here? Any help would be greatly appreciated.