No apologies necessary for this extremely helpful and informative tome! Thank you for taking the time. I know the Diamond coat stuff is a 1K, and I am wary of putting anything on this frame without first doing some thorough testing. I’ll be asking around at the reputable vintage shops in the area for local frame painters who know their stuff. If it does come down to a refinish, I’m bracing myself (and saving up) to bite the bullet and ship it to the man himself, or his son, in Italy.