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Hey guys I have searched a bit , but haven't found to many threads for rush/axys 600's I am playing around with a tss-04 64-42-.36 140-220 in the back and a few different setups in the front 10-60 ,10-62 and some heal clickers and its geared to 1.9... my son is about 150 lbs. motor...

Guys Does any one have a Document describing the functional control of the exhaust valves, what is the trigger for the second stage opening ... I am only getting 8000 rpm (66' against 120-310.... unfortunately the issue showed up during clutch testing .... took out weight ...added spring...