Fuel Tank Removal

[complextool]

I have a fuel contamination problem in my 1973 32 foot Marinette with a fly bridge. I have tried everything with adding filters etc. to stop the particles from the fuel tank from entering carburetors, but the first of now 3 filters per motor gets plugged in 20 minutes and the engines will only idle at that point. The second inline is completely clear fuel as you would expect. It's now time to remove the 80 gallon (I believe is the stock) gas tank. Has anyone had to remove the deck floor to get one out? The tank sits right in the middle, about 5 feet aft of engines. Is the angle iron supporting the deck floor welded or bolted? I will be getting into this project in the spring. It's in storage 3 hrs away, so I haven't looked around underneath too much yet. Is there a way to flush the tank without removing it? Any help would be appreciated.

[jralbert]

Not cheap, I suppose, but there are commercial fuel cleaners. Google for any in your area. Or to educate yourself, google for any and discuss the options. They will, I think, be happy to help. Good luck. When I owned CharlieB, the last years were plagued with fuel issues. Expensive to remedy, I'm afraid.