22 950 HO Sport. 150 miles. Installed stingray helix with spring and primary kit from RNG. Ran fine but had audible clunk when taking off. Disassembled and inspected everything looked good. Still clunk. Returned secondary to stock and rode. Ran good until I flogged it a little. Then suddenly it sounded like  a bag of marbles bouncing around inside clutch cover, still ran fine. Disassembled and inspected again. Nothing appeared wrong. So I put stock primary weights and spring back in. Runs good no noise. Anyone else encounter this? Thanks.

Contact RNG he'll walk you through it an help figure it out