The lower mirror bumper is not the only cause of sticky mirror, there are some other elastic rests in the mirror box that are likely deteriorating (turning to goo) and interfering with the mirror action.
Cornelius Nuzzlemuff III
The lower mirror bumper is not the only cause of sticky mirror, there are some other elastic rests in the mirror box that are likely deteriorating (turning to goo) and interfering with the mirror action.
Cornelius Nuzzlemuff III