This view is looking down into the hole cut in the tank you can see the piece of metal that fell into the tank and a baffle and also a LOT of tank grunge and grime. Remember, this boat used Soltron well before it was marketed in the US as Startron, and it had been in use religiously for the last 15+ years, yet this is what the interior looked like. It should also be noted that this was after TWO treatments Startron Enzyme Formula Diesel Fuel Tank Cleaner. Fuel tank "cleaner"? Really? Not in my experience... Oh and this tank had also been "professionally" polished by a dock side fuel polishing outfit. Polished? Really?