Kitty Cat Snowmobiles

So I have a 94' Kitty cat I just bought cleaned carb, change needle and seat. Runs great when cold. Soon as it warms up it falls on its face, have to hold up and full throttle to get goin. Then eventually quits. So after reading forums I decided to check comp. It is about 80-85 cold didnt bother testing when engines warm. So my question is is that too low for a cold comp test? and if so were can a guy get the parts for the economy price if you get what im sayin. hopefully Ill get more help here then some other forum ive tried.

Com'n guys help me out here!

Yes, that pressure is low if your gauge is accurate. You wont know for sure what parts you need untill you tear down the top end.