I cut 6 shims from banding strap material to the right length and width to fill the spline taper fit and then with the hub back off the end of the axle far enough to slip the shims into the splines I then hammered the hub on until I could get the nut started. If you canít get the nut on with the big flat washer under it just leave it off until you can get the hub partially pulled back on the axle and then remove the nut and install the washer under it again. I then tightened the nut with a 3/4" drive pull handle and a 3' cheater till I was afraid the threads might strip and quit. I then removed the nut and cut the ends off the shims that had protruded from the end of the spine and to see how much more I had to play with and the end of the axle was still more than 1/4" inside the hub. GOOD! I then put the nut back on and repeated the tightening process. Donít put the locking wire in the nut until you have run the tractor for a few hours and then re-tighten the nut again. Do this a few times before you replace the locking wire. I wish you luck!