Well just went to the edison lab in west orange NJ with mother and grandmother. Yesterday night I took apart my A/C system to just check the condition of the lines and everything like that and what I found, NOT GOOD! The H-Block expansion valve had powdered rust in the suction side, the inside of the piping had some surface rust here and there quite minimal except for the discharge line and on top of that, the piping is hard to find if need replacing. So when I go to rebuild my suspension when I get back in florida, I am going to use the phosphoric acid after removing the rust from the leaf spring hardware use it on the refrigerant lines, then repaint them and seal everything off until i finish rebuilding everything. but damn it, rusted internally isn't good, probably sludge in the compressor and condenser, eitherway i was going to rebuild the compressor but damn, it just got more involved.