Hey guys/gals, I have a Scag hyro 48 wb. The problem i am having is that when i back up the right tire barely moves compaired to the left. When the mower is cold the right lever sticks. I took it to the dealer with these complaints and none of them where repaired-not happy. The hyro filter and fluid were changed last year. It seems like it would be too little pressure to the right wheel motor but i dont know. the mower is three years old and in good condition. Thanks for any help.