My 1983 R65 has had the solid front spacers between the frame and engine replaced with rubber and I would like to return to metal spacers. I have two sets of spacers, thick and thin, and have gotten mixed information about what goes where - thick on left, thin on right, vice versa, two thin, etc. I have seen R65s with two thin spacers, none with two thick spacers. Anyone have the answer? Are there spacers for the rear mounts? What are the correct sizes for those? Thanks.