Had a couple questions from some of you on this 10-20. First this is what i changed on the govenor to make it variable speed had to do a little grinding on timing cover to let govenor cover and arm fit. Didnt have to change mag stand. Rear tires are Wards Riverside Power Trac 11-24. manifold has HF131 stamped on it. Used IH paint for red and gray in cans and quart cans for final coats with air gun. Was told that they didnt have a certain color of gray when they were built. Where ever they could get the paint cheaper from thus not all 10-20 had the same shade of gray. True or not?