Thanks for your replies guys! Sooo, not that crazy after all? Hmmm... Oh yea I forgot to add I had the two pieces soaking in (white) vinegar for a couple of weeks, although it was cold and did NOT add it to the whole process of PBW first then acidic solution, etc... Although it did work magnificently to remove what seemed to be the start of little mold colonies forming on another piece... Same story, tried ISO, GO, Crystal Clear... But there were still little marks, so I used the vinegar and it was perfect.