I've been seeing something odd the last few weeks.
When I'm riding over 25 mph, the left hand mirror starts vibrating rapidly, giving me queasy rear views!
Right hand mirror stays steady as a rock. Neither mirror has any problems holding position, no need to adjust 'em on any regular basis? Stock mirrors on my 2019 SLR btw, have never removed or worked on either of these mirrors.
Anybody have an idea what's causing this or how to fix it?