Give Evaporust a try on those smaller parts. It works better (faster) than vinegar, and will loosen the paint as well. The downside is it has gotten expensive, nearly doubled in price to about $32 gal on Amazon.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.