> So why hasnt a tech bulletin been released and a resistor > added to > current > production? It has for some amps, and I think the AL82 is one of them. I know all the newer production amps have HV limiting resistors. I've been out of that loop for many years now, so I can't say with any certainty. All the tube problems started when Eimac quit building 3-500Z's. 73 Tom