Hello, I have a John Deere 14SZ silver walk behind that I bought new 30 years ago. Still runs well but wore out, ie., no power. Are there BS rebuild kits available or an easy upgrade replacement engine? Also could use a deck (aluminum) if price is right. I hit something and broke a piece off toward the back so now the belt flips off under heavy cutting. Rather find a good used deck than have this one welded. I’d have to fabricate the missing piece but don’t know exactly what it looks like? I’m in Lawrenceville, Georgia (Atlanta area). I obviously love this mower and don’t want to give up on it and don’t know of a quality mower to replace it with. It always was a little underpowered but not too bad. Any help appreciated, Phil