Does anyone have experience with using a Durst Laborator 900? I know that the enlarger orginally was sold together with lenses. But does it also work properly with other lenses than the orginals sold together with the enlarger? I also wonder if someone know if it's possible to find a manual for the enlarger or the cls 450 head somewhere (I have searched Durst's homepage and webshop, but didn't find it)?