Bob you are seeing some of the success of rust removers as well as some of the let downs. Products like Evaporust are great at removing rust....but also at revealing pitting. That's why I've had to buy multiples of various parts in an effort to end up with as many clean pit free parts as possible on my project. It gets old and expensive. BTW Ive recently tried a new rust remover called safestrustremover. It works like Evaporust but seems to do more parts before becomming useless. About $100.00 for 5 gals.