I had issues with my 500. I have heard of other 1000's having issues.
My 500 was used a lot to plow snow and I traveled state roads between the driveways I plowed so I got a lot of road salt. I was also parking the 500 in a shipping container overnight. When I'd pull the machine it the engine was hot so that little bit of heat probably helped the salt work. The paint was just falling off in some places. I used rustoleum bedliner to repaint the frame after sanding the rust off. Use the gallon can, NOT the spray can. The brush on stuff is a lot better