Sorry to start yet another clutching thread...but I am having trouble finding clutching info on the 650's. Everything seems to be on the 750's and the extra power must make a difference in the clutching right? Right now I am running 27" mudlite xtr's (I know they're not great, and heavy) hoping to get something bigger when I get my lift on in it. Also, we ride mostly between 4000 and 6000 ft elevation. I am thinking of running the Dalton Orange/blue strip primary with stock weights and the plain purple secondary. Do you think this will work okay? Any other suggestions??