On our 2025 Discovery the left side mirror has begun to shake somewhat violently, at the connection to the coach, while driving down the road.  It can be easily moved while parked.  Has anyone had this issue?  What is a fix?

I have had the same issue with my 25 Frontier. There are two Hex screws on the mirror head to arm connection. They need to be double screwed, in other words if there is only one in each threaded hole you need to buy two and tighten 1st and then the second. Do the pax side too.

Chris