Hi, I'm having a lot of problems with Epson in obtaining an air filter for my eh tw 3500 projector. I first tried to buy one from their official website (price £22) last February, some 9 months ago! Several emails later I am being told it is probably an obsolete item (ridiculous) and to go to several of their recommended stockists. If you enter the Epson number (elpaf21) all the companies show not found. I have seen this for sale for £60+ on only one UK site but do not want to be stung! What's going on? It appears this item is sold in Europe and America, so why can't Epson get their act together and stop messing their UK customers about! Any body else had any dealings with this "top notch" company?