I've moved my driver side mirror forward and while the angle is much better and more in my line of sight, the mirror vibrates and shakes so much on the track, that it's not that useful as an actual mirror.
I suspect I need to add some reenforcement under the door skin - it's currently just using a couple of fender washers that don't really provide much stability - the door skin itself doesn't seem to be very stiff in that area. I've considered drilling two holes in a length of, say, 6" x 1.5" steel plate and using that in place of the fender washers, but am worried that those might end up deforming/denting the door skin (and while it would give front/back stability, I'm not sure it would really help with up/down vibration (which is I think most of my problem).
So... any advice for best way to stabilize a relocated mirror?
Thanks!