The KGSSHV is being rebuilt from the start by an audio engineer friend of mine. Since it's not among his priorities, he told me it will take some time. He already changed all the fried transistors and resistors, but the amp's groundind is still not ok, that's why he found safer to rebuilt, resolder, rewire it from start. Mr. Gilmore was very gentle to offer his help solving the amp's problems.
Rebuilding the KGSSHV has reached its final stages. On next Wednesday I've scheduled with my technician to follow the testings. Hope everything sounds right this time.