I have a Hustler that I continue to have axle and sprocket problems with. It seems the V-Twin is too much for the old sprockets with the wallowed-out holes. It was suggested that I switch to keyed or splined axles. What machine uses these that I can get a set? I do have one keyed axle already. Will I need anything other than the axles and sprockets? Bearings, flanges, ?? Thanks!