I just completed changing the drive belt on my LT160. It was the original factory belt which lasted for 11 years. I researched on line following the same instructions posted on here of disconnecting the front steering rods, loosening the brake pulley, and the other two idler pulleys to get the belt off and back on. I put the new belt on,reconnected and tightened everything up. I put it in reverse and it went really slow. I then circled the driveway which the tractor was slow and had trouble going up the minimal grade in the driveway to get back into the garage. Any idea on what is wrong or I didn't adjust something correctly. Thanks....