Now that Calumet is out of business here in the US, who is going to repair Cambo gear?

I have a 4x5 rotating back that is loose and needs to be tightened up. I'm not sure if there is enough play in the back, but I am worried about my sheet film holders not being in the focal plane.

A friend loaned me his while I get mine serviced but I don't know where to send it.

BTW, will any company be selling new Cambo gear here in the USA?

Thanks,
Terry