I'm having an issue with my T1200 craftsman mower. It started with it not wanting to go in to reverse and it eventually got to the point where I had no brakes and when I put it into gear it would start to creep forward even with the clutch/ brake pedal down. I think I've isolated the problem to where the clutch/ brake linkage engage behind the right rear tire. So..... the problem I have now is that I can't seem to get that tire off. I've tried everything from spraying it down with penetrating oil to beating on the back of the rim with a piece of angle iron and a heavy hammer and it won't budge. It looks like it had a keeper on the rim at one time but it's been replaced with just a washer. Any ideas on how to get the rim off so I can get a better look at what's going on with the linkage?