this is why people must learn the trick of squirting cavity wax or engine oil/melted vaseline into rocker panels and door skins and all other areas that can channel water into. Ive even used wands to spray epoxy primer into those hard to reach areas. Great way to protect your vehicles from rust outs. And especially if we playing wit dinosaur 90s s-chassis that the original factory under e-coats/primer from those inner panels prolly getting too old and not protecting anymore. Also refresh new seam sealer on spots and panels that need them because the original factory ones have finally vaporized lol.
Okachan is a legend and seems like a great guy and seems like a total joker but sadly I can't understand anything you're sayin and it sucks because it seems so entertaining.