For a $4,000 USD HF amplifier, I would drive the extra miles to Ameritron in Mississippi.Ameritron factory is actually closer to you than the east or west coast amplifier repair centers!
116 Willow Road
Starkville, MS 39759
General Information: 662-323-8211
Technical Support: 662-323-8211
Ameritron Customer Supporthttp://www.ameritron.com/custsupport.phpBTW, FORGET the local truck stop CB shop.
Few, if any, have knowledge, parts, or ability to work on High Voltage ceramic tube (8877) RF linear amplifiers.