Hi, I was browsing the classifieds and found an old post advertising a Yamaha A1 and the seller said "it does not have the colour blob problem". Now I bought an A1 from (blush) ebay before I knew any better. What is this blob problem, and how can I tell if I have it? Also the remote has that A, B, C selector switch on the side and on the one I won, it is broken and A and B do not lock. Where can I get a replacement? How is it best to search these forums for A1 articles; the term A1 is too short for the search engine! And finally, what are A1s and A2s worth, outside the mad world of ebay? Thanks.