I have a a 2008 snapper 61' pro 200-S series. At about 500 hours it started having a delayed reaction going in reverse. Now it has almost 800 hours, and i can barely back it onto the trailer. The problem keeps getting worse. It seems to get worse as the day goes on. Like the hyrdro fluid is getting too hot or something. I take it to the shop to get it fixed, and they say there is nothing wrong with it because they don't leave it running long enough for it to stop working. It works fine on the first couple of lawns i do, and as the day goes on, it gets worse. Anybody have any idea how to fix this problem? The fluid is full, and i am using the correct kind. I maintain, and change it according to the manufactures label. Also the drive belt is new, and forward work fine.