I am using eccentric bushings on the upper A arms on my 90 Si. Ground Control sold them to me. While checking the caster I noticed that the Whole A Arm could move along the axis of rotation about 3/16ths of an inch with very little effort. I did not investigate further to see how much caster I was gaining or losing due to the movement. I did buy a 49 cent washer and install it between the bushing flange and the mounting bracket. It appears to have stopped the axial movement.

Has anyone else experienced this? Is this the proper way to correct the problem?

Thanks
Duncan