Picked up an 01 CR250 the other day that needs a clean up. When it hits powerband the revs bounce like its hit a limiter too early. So far I checked the copression 165bls and cleaned the carb and jets out. Fired it up and its still doing it. It's probably going to be a process of elimination but was wondering if it was something someone had seen before. Or just put what you'd look at next. I have a fully working 99 cr250 I've just fixed up to borrow parts off too.