john deere l100

I have a 2004 john deere l110 and it has lost it's torque going in reverse. When I go in reverse up slight inclines, it sometimes just spins the wheels or does not move at all. Does the long belt cause it to go in reverse. I don't mean the mower deck belt. Thanks in advance.

This is Mike Fraytet. We bought the mower in 2001 and started using it on 3 acres with 20ｰ mountain slopes (1 acre of mowed area). The mower has plenty power on flat ground. We fitted it with tire chains on front and back, added water to rear tires and added 60 lb of weights to hold it down on...