I've got kind of a gnarly gas tank, and it's cleaning out pretty well but in an ideal world I'd be able to seal it. I'm not prepared to take it all apart again just so I can flip the frame, especially because I have limited room as it is. So my question is, and I might already know the answer, is there some product or technique that will let me seal the tank without undoing all my work? Ideally something that can fill the tank then drain out.
Another question along the same vein would be, is it ok to not get the top? I could probably roll it around with a friend and do an alright job, but does it really matter if it's not perfect?