I'm in the process of restoring some of the hardware for the front suspension.

Some parts are new and some original. Nothing in horrible condition rust wise.

Even after I soaked them in the Vinegar/Lemon,
https://board.moparts.org/ubbthreads/showflat.php?Cat=0&Number=5632981&an=&page=&vc=1 I've noticed a flash rust beginning.

Is there something I'm doing wrong?

I even tried ECS RPM stuff after but it didn't help long enough except on brand new parts.

I'd like to re use alot of this (short of sand blasting) if possible.

Is Muratic Acid a better way to entirely eliminate rust at the surface from re appearing?