Header vibration on K-Member

[cop-coupe]

Well I have BBK Equal length headers and one of the tubes on the pass. side is vibrating lightly on the K-Member. I have new motor mounts that I installed the same time I did the headers, I was wondering if there was any reason I could'nt just put a hardend thick washer "spacer" of some sort between the mount and the block on the pass. side All I would need is less than a 1/8". the car had been hit in the right front corner before I bought it so I dont now the extent, but it tracks straight and the body lines all line up so I think every thing is O.K. THanks for any input.

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1990 spec. serv. coupe w/aod, b-303, gt-40 heads and intake, 1.6rr, 1" spacer, fms valve covers, mac cold air intake, bbk equil shorties, under drives, 65mm t.b. 2.5" flows, fms 9mm wires,