Quote:
Originally Posted by guy99
My driver side rear view mirror can not be locked down because the set screw is frozen. I assume that it is frozen because the set screw is steel and the mirror fixture is aluminum.
Penetrating oil hasn't helped so far.
Any more ideas?
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Apply some heat to the area. The aluminum will expand and contract at a different speed fromt the steel, and after heating it up, try loosening it before it cools off again. Just be careful, as aluminum melts at a much lower temp than steel.