Well as I said earlier, a lot of info for a small box. Bit of an education curve for all I would think! And your right Bob, in regards to the tubes in the box, I was short one and bought one from a supplier in the USA to complete the set. However like you Bob, I purchased a tube/valve from the Ukraine, Tube/Valve Capital of the World, (before the war started), waited 4 weeks for its arrival, got it and plugged it in and BLAM

no more tube. What can I say....G'Damn Russian Manufacturers!!
Robert