Not done the A14RGS mod to my RGS, but will file away for just in case.
I found I had one mirror which moved from trembly to wobbly to floppy to droopy (4 of the dwarfs) and the other was a lot better. Taking them off I found one had a "U" shaped connection from the mirror stem with a pivot through the tennon on the mirror arm, the 6mm nut was at the end of this. The other one had no tenon, just a plate screwed to the mirror shaft and welded to the "U" shaped bit.
Easy fix, cut the tennon off the mirror, fit a little flat plate and weld together, screw this to the mirror as the other and they are both Fairly stable mirrors.
The next and best thing I did was to fit racetech emulators.
The wobbling from road shocks has gone, now its only a sympathetic vibration with the rev's.
I have found a sweet spot but its way past where the local Police would like me to ride........
No pictures I'm afraid but if I take one off I will post.
Steven