on gas or not, at 28 or higher, it has developed a..shudder...sort of like there is a flat spot on the wheel or something, its cyclical, like powerloss, but very, very fast. ive checked tire pressure. valves were just adjusted by the dealer...it pretty much started after that. there are 500 miles on the scooter. feels more transmission/wheel than engine. anyone experienced this? thanks!

 

did you ever figure it out...this just happened to me. I'm thinking my clutch is stuck engaged but have not opened the CVT cover