There is a tool to apply torque to the clutch center....I do not have a part number.I made my own tool from 3 old clutch friction plates (I used 3 to get more bearing area on the clutch center - 2 would likely work just fine). the friction plates are aligned on an old center ( or remove the existing one), then drill 3 holes thru all three plates approx. 120 degrees apart, then bolt the plates together. Next weld a 1 inch wide by 1/8 flat stock strap across the center of the outer plate, and in the center of this strap, weld a 3/4 nut. To give yourself more finger room to work the rubbers, I welded the flat stock to two 1/2 inch black iron pipe unions which functioned as spacers keeping the flat stock strap about 1 inch above the friction plate.Engage top gear, apply the rear brake, and apply torque to the welded in nut, while a second person pushes in the rubbers. Sorry that I cannot show a pic of the tool .... I am on the road .... Be home in two weeks. PM me then if you need a pic of the tool.