When we got ours it had the focusing mechanism jammed up due to the grease drying and causing it to stick. I tried loosening, WD-40 etc., but finally resorted to a hammer and dowel.
There is no lens board, but the enlarger itself is threaded for a normal 39mm enlarging lens. I believe the light bulb position is adjustable, ie moves up and down. If you are doing medium format you need the 60 condenser. You can make a suitable negative carrier out of mat board.
It is a good, very compact enlarger.
Jon