Has anyone ever had an access port put into their fuel tank? I have a diesel tank that I drained of fuel, some of which was pretty nasty, and want to clean out the tank but it seems an impossible job. The only access is through the fuel fill hole and I can't see doing an adequate job with just that small access. Practical Sailor mentioned a company - Seabuilt - which makes access ports and I'm tempted to try installing one. Does anyone have any experienced with them or with any other access plates? Thanks