elevation

I'm a newbie to snowmobiling and have a new 2013 Arctic Cat XF1100 Turbo So-Pro High Country Limited. I've been riding is some fields in ND, on the little snow we've had. My knowledge of the machines is low, but am learning alot fro this forum and was informed that if I was going to ride in the...

Anyone know a good set up for the PC M8 for 0-3000 ft. elevation? Is a new torque arm/helix necessary or can you get away with just heavier weights (75g-80g) in the primary? Thanks for any suggestions

Hey, i just bought an 05 M7 that is all stock with a 153" attack 20 track. I just bought some Cutler IT adjustable weights and was wondering if anybody knows or has seen any elevation charts for the M7. I need to know how much to load up the weights for each elevation. At home i am at about 1600...