Welcome to The Carver Site, @mwc951.
I wish I lived where you lived, anything Carver that hits FB MktPlc, Craigslist, or eBay here..., locally, gets bid through the roof... Sounds like you have an awesome good deal on a nice setup. You will love it.
I'll also second what @Daddyjt, said. I've seen several invoices of other "Carver" techs, some claiming "authorized" status..., and they surprise the heck out of me in terms of unclear work, unclear parts for what purpose, etc. etc. Skip the riff-raff, and go directly to Nelion Audio. Greg's contact info is on the www.NelionAudio.com website. Give him a phone call, he spends the time with you on the phone to ensure you understand what he can do for you, and what you can expect audio-wise out of your gear.
Always cool to have a new member...,
When you get a chance, please post a picture in the Member's Systems of your gear - before or after you get it back from being serviced! 😉 We love pictures