I have this set of new Speed Pro 440 forged pistons that has been sitting in the box on a shelf for several years. The pins are all stuck in the pistons. There is no rust on the pins. I sprayed the pins with wd-40 about a week ago and yesterday wrapped one with a plastic mallet a couple of times, but it did not budge. Any tips??
I going to sell them, but I want to make sure there is no problems first.