(Shame on me) Where's the 4th 12AX7 valve? I just see 3.
And one more thing, the 12AX7 in the middle is V1? Board says V2 at right (or left) and V3 opposite. And the other V? is in the middle.
I asked T.A.D. for valve replacement and they sent me 3 different valves (actually 4) for V1 a high grade 7025, for V2 a 7025 mullard style, and 12AX7WA for V3 and V4 (the missing one)
(sorry also about my english)