My buddy just picked up his first sled, It's an older wedge chassis sled (89?), with an old Indy 600 motor in it. It has triple pipes with a canister (not a stinger) any guess on what they are? They are not PSI's or SLP's... It's in pretty rough shape cosmetically because the dealer rented it to some people in Togwotee and they spray painted stripes on it.. Anyhow the sled runs premix oil could anyone tell me the ratio for this sled? I've never done premix, and if anything I'd rather be a little more rich. The choke assembly is broken (just the lever and the stud) How do we replace the stud because it looks to me like the stud is encased in the little housing.. I've done the levers before just not the stud. Anyhow, the sled has a drop and roll and I believe a 141, and overall it's looks to be a good little starter for a college kid on his second year of riding