I bought the same ebay swinger from CFM, who is a member here. There are a few differences in this swinger than stock. So you will want to get an aftermarket slider. RMATV has the Modquad one for $25. The new swinger crosstube diameter is smaller than the stock cross tube. You will see this when installing the bearing seals. Now they are no longer a functioning seal. Go figure :thumbsup: ! The two washers you got are for shimming the top carrier bolt. Make sure the bolt holes line up for the lower chain guide. Mine were about 1/4 inch too close to eachother, so any lower guide I use will have to be drilled out. Nice huh? I must have got one of those "blems" he was trying to sell on here. I sent a PM to CFM about it, which he did read, but he never replied.