A couple weeks ago, I mentioned about picking up a 4x5 Beseler cheap. So I did. I managed to get it with 35mm, 66, 69, and slide neg holders. I also got a Nikon 105mm lens as well as an old Schneider 50mm lens. It came with an Arista Cold light head. Motor works good. My questions: 1. Can I get light bulb sources for the Arista Cold light? It didn't come with with a voltage regulator, do I need one? My 23cII Arista cold light came with a voltage regulator and looks like a proprietary plug. 2. This particular model came with a sliding filter holder and it slides on top of the lens, clever. BUT, my Componon 80mm lens sticks inside the bellows about an 1" and now, I won't be able to put a filter when using an 80mm lens. Do I have any options? 3. How do I level the lens? There are screws on my 23cII that I can move the lens back and forth and side to side to get it level. 4. I have neg holders that have 4 pins on it. Are the 4x5 holders with the circular ring inside will work with this enlarger? TIA!