I have a 68 chevelle that I,m restoring. About 10 years the power stirring pump and lines were removed. The two fitings on the stirring unit were left uncovered for all that time. I,m going to install a power stirring pump and reatact the lines. My question is, Is there a good way to glean the stirring unit without dismanling it. Some sort of cleaner or a way to get the old pistions to work again. I,m sure they are forze up. Thanks John.