here's a couple of links to some Omega guides & pdf's of the manuals for the D2 anyways, plus the service manual...

http://www.darkroompro.com/equipment...ers/index.html

this one has some pix of the different models, including the older condenser heads etc:

http://www.khbphotografix.com/omega/index.html


You might want to check the counterbalance springs--these need to move easily & be free of rust. Be careful you don't pinch your fingers...those lenses you list--the tessar & the wollensak are dogs. Sorry--I'd look for some more modern lenses, like a rodenstock, nikkor or schneider. Those lense are probably as old the enlarger..