Don, if Himark is serious on the offer cut your losses, don't throw good money after bad. He can get it up and running with a small investment and mechanical skills, you've already spent too much time and money to ever make it worthwhile. Take a hit and get on to something else, you'll never be able to enjoy that sled no matter how much time or money you waste on it. Maybe you guys are to far apart, try selling locally, there's always somebody willing to take on a summer project if they get it for the right price. Oh, and thanks for the Shoei helmet you sold me a few years ago, that's how deals should go.
You are welcome on the helmet. Glad to know it worked out for you.