With Chaffer rails out I measure the width inside combine and compare with the width of chaffer rails (with chaffer bolted in place) This will give an idea of how many washers are needed. Don't try to pull the bushings to the rails or the bushings, shaker pivot will fail prematurely. Inside the combine the bushings should extend the same distance on both sides (so the rails are the same distance from the sides) and SQUARE with the sides of the combine. If the auger bed shaft is twisted one side of the chaffer will be pulled ahead of the other making it bind and cracking the side rails.I push the bushings in so only one washer is needed. Takes time to fit the bushings but with so much variance in width inside combines you space it with washers or take the arm back off and move the bushings in 1_8 inch. Just lookes bad (to me) with a bunch of washers, and its hard to get them in without dropping them (wrap them with tape) Good luck!
