If WD40 or Plus Gas etc isn't working.
Mix up a 50/50 solution of acetone & ATF (automatic transmission fluid)
Spray it on using a garden plant sprayer or brush it on.
The idea is the mixture will creep into places that ATF wouldn't without dilution. The acetone then evaporates leaving the ATF on the threads of the offending fastener.
If you get the solution on any painted/chromed surface. Wash it off quickly as acetone is commonly used as a nail polish remover. Therefore it will dull painted surfaces if not removed quickly.
Mix up a 50/50 solution of acetone & ATF (automatic transmission fluid)
Spray it on using a garden plant sprayer or brush it on.
The idea is the mixture will creep into places that ATF wouldn't without dilution. The acetone then evaporates leaving the ATF on the threads of the offending fastener.
If you get the solution on any painted/chromed surface. Wash it off quickly as acetone is commonly used as a nail polish remover. Therefore it will dull painted surfaces if not removed quickly.