Hello Launch1940 and welcome to thecarversite.com. Glad Grok and you found us.
We have quite a library of owners and service manuals., and you can find them one of two ways.
1. Up near the top of the site, there is a link called "Manuals and Specsheets". Clicking on that will take you to a table that kinda resembles an Excel spreadsheet. Make sure you're in the Carver section, tab on the bottom, and then scroll down to the Preamplifiers - Tuners section and you will find the CT-26v. There are many others archived there, and they are all free to use.
2. The other way is to just click on this link and it will take you directly to the CT-26v service manual:
https://thecarversite.com/manuals/mandir/Carver CT-26v Preamp Service Manual.pdf
and this link will take you to the owners manual:
https://thecarversite.com/manuals/mandir/Carver CT-26v Preamp Owners Manual.pdf
Congrats on getting that M1.5t up and running again!