A friend of mine bought this 2002 440 sno pro snow cross model. It seems to run real strong up to about 8600 rpms then it just backs off a bit. It is as if it may be running out of its power band. The big problem is we can't find any information on this model, like rpm range, jetting, clutching, etc. Some one told him he may have to run high octane gas or race gas. It also has some sort of timing advance knob. If anyone is familiar with this model any kind of help would be appreciated, THANKS
