Oh. You sure did. I thought you had, too, and I just looked real quick at one of the pics and my eyes deceived me; it looked like a normal flattie jug the first time I glanced at it...you obviously already showed pics of your relief job.
I used ospho in the tanks when I got them, just to stop the rust. But rust kept flaking off and causing blockages. I don't like tank liner and will only use liner as an absolute last resort.
Im used to stronger acids so when I've tried evaporust in the past it just seemed to do nothing. But I decided this was my best shot to get the tanks sorta clean before lining with redkote.
Well, low and behold, after 3 days things looked better. After 5 the tanks looked so clean I couldn't believe it. Since no pin holes showed up, I didn't even have to line them. So, evaporust has my vote. The only downside is the $20 if you need to buy 5 gallons.
I didn't take any before pics, but the fuel line pic tells the story.
If you want more power and reliability, better parts availability. You might think about putting shovelhead heads on it. If you want to ride it more. I'm not a fan of different model heads with different lowers . But in this case .I think the lines of the bike are excellent With the shovel upper and UL lower. We use to do this alot with the UL's to make them alot better. Pics are from SuperCycle.
Fun fact, albeit off-topic: "Steve Nelsen" (also "Steve Nelson') was the bullshit moniker of Steve Iorio (of SIE springer fame), who also owned Nostalgia Cycle, maker of the SuperVee and Supercycle Magazine that that article came from. Supercycle mostly existed to hock Supervees. magazine was long on pictures and promises and short on... well, delivery of those promises.