I found a head and column that appears to work well on auction within driving distance and bought it. I can't afford to outfit my darkroom all at once so I'm content to watch the auctions and spend the money when I have it. So my question is what sort of things do I need to be looking for? I called Jens (Jensen optical) and he's working on a wall mount for me but I also need neg holders for 6x7, 4x5 and 5x7. Is there a model name for the holders that fit the 138s? I also need a manual. I watched one recently go for $30 and wondered if that was an inflated price or what? What about lenses? Do I need anything special to fit them on my turret? What are your favorite focal lengths for the above formats? I thought I would ask all the 138 users here as I wait for Jens to get back with me on his solutions. He's a heck of a nice guy and super helpfull but very busy as well (I think he's worth the wait). Thanks in advance Alan.