I'm assuming it's the same mirror as the RRC. So is it the whole mirror that wobbles, in which case it's past it's best as the spring in the bottom has come adrift. Or is it the mirror glass that's loose? if so it could have come away from the mounting in the back (the number I've seen held on with silicone though :roll: ) and the basic mechanism is the same for both manual and electric mirrors, this part can be removed and swapped for a good one if you can get he glass off without busting it.