[Wild Bill]

I had the same problem I took mirror off did not see any adjusting screws for the case, there are two rubber inserts I thought perhaps it was behind them but not the case they just act like shock absorbers, I did not want to take the mirror off so I did the unthinkable that's right I superglued the case so it did not wabble. You can't tell that I did it, but don't tell anyone!