I managed to pick up a De Vere 504 free standing unit with dichro head. A couple of questions. 1 - I had to get this beast up two flights of stairs. In order to do this I had to remove the baseboard frame. The focus wheel cogs then came out of their chain. Does anyone have the correct threading method for the chains? I've got the head and bellows moving but I'd like to make sure it's installed correctly. 2 - The trans stab works fine but buzzes when I switch the lamp on. 3 - The fan is noisy but I've ordered a replacement from Maplin. Are they all 230V fans? Otherwise it's a great piece of kit and the seller threw in 50, 75 and 135mm Rodagons, all size masking frames and a set of mixing boxes. Just one last question. I find the enlarger very easy to use for 5x4 and MF but do you suggest keeping a smaller enlarger (I have a couple of Durst Mod 70's) for 35mm as I find that the head is quite close to the baseboard on the 504 when trying to print 10x8 from 35mm. This is resulting in shorter exposure times than normal.