i see alot of people swear by this rust converter stuff and sence its gonna take me 2-3 months to aquire all the tools i needs for repairing/replacing my rocker panel i was thinking ide wire brush everything and spray that on for now. my question is should i drill a few holes (were its gonna need to be cut out anyway) and spray down the inside so the main frame of the rocker dosnt get all messed up? if not, why? thanks alot any advice is appriciated!!