Gas tank-To seal or not to seal, that is the question?

[Honkey84]

I have been working on my 29 AA for a little while now, as time and mostly money permits. I have taken the gas tank out and was wondering if I should seal the inside of the tank or not? I don't remember it leaking before I drained it, except for the sediment bowl was all. So I was curious should I seal the tank or leave good enough alone. Here are some pics of the inside of the tank. Also the dark spot aren't holes, just dirt and other crap in the tank.