Here is a link to Youtube that shows how to loosen up the needles without loosen up the screw. You use a soldering iron on the screw and and you will see the needle/meter start to move and go back to zero like normal. The meters work just like new.
Use low heat, that show be good enough to loosen the meter/needle up.
Hope this helps!
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Topic - Fix for stuck or barely moving meters - Cougar 12:09:06 12/30/20 (0)