Thanks! Arundo, I do not know much about that but maybe Acid bleed? is the result of a horn not being fully degreased and having the lacquer sprayed over an area of the brass that is not perfectly clean. More or less it means that there was a small imperfection in the finishing process of the insturment?That's a beautiful YAS-21 you've got there, mluis.
I just checked my YTS-21 (formerly a school rental). It has no orange peel at all, but does have some pinkish deposit I'd not seen before. What's that?