Took a ride to Ace Hardware and got a 1/8" plug and 3/8" plug for the tank so I can rinse them out good.
Cleaned old welding flux out of tank seam corners. Thought it was going to be more difficult than it was. Wasn't really a problem at all, boiling water out of the tea kettle seemed to take 99% of it off on the first pass. Rinse again with Musr for Rust and more boiling water, than just a rinsing again with hot water. Seems to be a non-issue, and it appeared to have been caked on pretty good too.
Good, makes me happy. One less annoying problem to deal with.
