I have a Beseler 67SC condenser enlarger permanently installed on a wall mount capable of projecting onto a variable height enlarging table or all the way to the floor. Although this is not my primary enlarger, it is useful at times. It appears that the 67SC uses the same chassis as the Beseler 23C enlarger which makes me think I could mount a 23C head on it with a little modification. The 23C has an adjustable condenser which sounds like an upgrade over the 67SC which has a fixed condenser. The 23C condenser is larger, too, but I only do up to 6x7 cm film and I always have my 4x5 diffusion enlarger if I ever want to go bigger than 6x7. So here are my two questions: 1. Does the adjustable condenser buy me much? 2. Is the 67SC chassis really adaptable to mount the 23C or did I get another batch of bad weed?