A-body Idler Arm Question?

I bought a TRW idler arm kit. It came with 3 felt type washers and a metal washer. The original idler arm I took off looks exactly like the one I bought. There was no metal caps on each end of the sleeve. Even when I took off the old idler arm I had only one metal washer, but I don't remember where it went. It will only fit one washer in between the K-frame bracket and the idler arm ,so I doubt it takes two washers one above the sleeve and one below. If I leave the washer out it has about an 1/8th inch movement up and down. Any suggestions???