I have a Ilex-Calumet Series-S Caltar 8 1/2 inch (215mm) f 4.8 lens mounted in a Ilex No.3 Acme shutter. The rear cell will not tighten all the way tight. I think the threads on the shutter may be worn so I have to put pipe thread tape on to get to stay. I cannot find any info on this lens to see if this is the right shutter. I had the shutter serviced at SK Grimes just before he died and they did not mention it was the wrong shutter. I am new to large format and was hoping a more experienced person may have info on this lens. Is it a good lens?
Thanks in advance for any replies.