Thanks man, that frame looks great. Mine is only leaking at the top so far. After I hose out the vinegar I’ll rinse with acetone and maybe finish it with muriatic acid. I might go get this:
https://www.harborfreight.com/39-in-x-16mm-inspection-camera-cable-64085.html
But I saw a video where an auto mechanic had like a $10 Amazon camera he hooked up to his lab top. I should have written down what it was.