Hello, I am now the owner of an Ektelon Model B stringer. It was given to me from a former AD at a community college who used it for years. I spoke with Tennis Machines and it appears the table has been upgraded but there doesn't seem to be anything else he can do with it. The crank is older, and does not appear to have any numbers to use to set it. Not sure what to do with this machine as I have a Gamma 5003 that I currently use. Is there a used market for this? Any information would be appreciated. Thanks.