Did you sand that area on the hull, prior to 5200ing it? I have a bilge in my blaster, and 2 in my sj, I just don't trust the stuff when it comes to that.. I made a bracket, that fits like a glove and is attached to the intermediate driveshaft... Then I rivited the bottom portion of the bilge to the bracket... Woeks like a charm I'll try to post some pics... by the way I used a 1/16th diamond plated aluminum