Have a 94 Ext 580 EFI that i just put new weights bushings, and yellow spring in clutch and it doesnt engage till 5000 rpm. Does that seem about right? Also with the track of the ground i noticed that with the speedo at 75 mph it was running about 8000 rpm....but if i WOT and hold it the engine will hit 9800!! Is there some kind of a rev limiter on these older sleds....cause 9800 seems high.