Yeah I’ve been meaning to figure this problem out for the past 4 years haha. Just decided to start working on the thing again so I’d figure I would sort that out while I do some other upgrades.It’s personal preference, but I hate the convex mirror on my hard doors. Maybe my vision isn’t what it used to be, but it can’t see anything in those convex mirrors. I switched to rectangular flat mirrors. There is a light vibration, but without doors I just reach out and touch it if I need to see in more detail. My arms are homemade and I think they are much of the source of the vibration. I have been meaning to try a dampener in between the mounting points, but honestly it’s not that high on my list.