Need help on McIntosh meters

Thanks stevecutler tapping the meter didn't work, I will order a replacement meter, odd thing is moves, but very little compared to left meter.

If you are going to take the unit face plate off anyway to replace the meter, switch the right and left meters and see if the problem goes away r reverses. If switching the L & R meters does not correct the problem, then there is a drive circuit for the meter that may have an issue.  I am not that familiar with the later model Mc's (they are very reliable and seldom require service) but I know on the earlier models (up to 2255's) there was a problem with the meter display switch which could also cause this problem.  I would have to look at the schematic for this model. Be very careful when taking off the face plate so as not to damage the fluorescent display which has a ribbon connector and is very fragile. 

Thanks stevecutler for the help! 

Careful talking about Discussing  thumping the meter dial near the movement, a well known member made fun of me for stating the obvious