I installed 2 new solid rubber wheels on the finishing mower over the weekend. Turns out that the rubber wheels/rims are more narrow than the air filled wheels/rims. As a result, each new wheel/rim required 4 total spacers (2 on each side) instead of the air filled wheels/rims (1 spacer on each side). I also made a seat safety switch bypass, as the stock switch was acting up and preventing the tractor from going into low/high without quitting. I will possibly install a new safety switch if my friend decides to buy one.