I bought this today & will be picking it up tomorrow. I recently started a restore project on my MF12 but I like the Cubs as well. This guy was told by his repair shop that serviced this GT that he thought it might be a burnt exhaust valve. The plow has had very little use & the deck looks good with newly installed belts, the tractor has been maintained as well. I actually got it for $185. Let me know what you guys think!