Thanks very much for the information John M and raymonddurban. This one is .030 over and when we put a ring in it was all but touching so they will have to be filed some. Like dad said it has been apart for a couple of years but due to health issues haven't been able to work on it. The cub was given to my uncle by his brother in law before he passed away and it had been sitting for who knows how long. Don't think I ever seen a motor stuck any more than this one.