Hello Tom, welcome to the site!
I have a C1 that was in for a complete refresh with the added Bill D. mod and Gundry filter added. All work was done by Greg at Nelion Audio in June of 2022.
I have several Carver pieces from the past and have been considering letting some go to fund my way to Bob’s new tube gear.
If this sounds of interest to you, feel free to message me and we can work something out.
Rob