My 1/4"s(inside the trunk) have that texture paint on them,its a 25 yr old resto..Its tor-red,,the inside of the trunk 1/4"s are dirty,,what would be the best way to clean them,,they are ROUGH,,,,I dont want to introduce a bunch of water in there,,,I tried once a long time ago by stuffing towels down in the crack and washing them but no good,,,thanks,,,