Howdy folks... havent' posted in some time... but I'm wondering if anyone knows of a source for a rectangular cold light head to install in my devere 504. I have a dichro head that I gutted and use a round aristo head in... but it's always a huge pain, since the lamp is a little far from the neg stage owing to the modification and I don't seem to ever get my 4x5 negs fully covered (!!!). So I'm trying to rectify the situation... if I can only find a rectangular or square lamp. I suspect the head cavity can accomodate a 5x7 lamp too... any suggestions??