Went to fire up my reassembled tractor the other day and use it for the first time. First problem I had was the drive belt kept slipping off. Think I got that one fixed by adding more tension on the belt. When I put it in gear, I noticed I now had 3 reverse gears, and 1 forward gear. Obviously something is turned around, but I reassembled it per the sticker that is underneath the foot rest. Any thoughts? Should I swap sides for the V pulley and Idler pulley that turns the belt from vertical to horizontal and see what happens? I didn't put in a new engine so its not like my engine rotation changed, I'm completely baffled as to how this happened. Tractor is a 917.255917, real similar to the 917.255919. Any advice would help, thanks.