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The holiday has slowed things down a bit, but finally got to test today. The T04 tests like an npn, with .65v-.85v on c/e pins. Several of them are showing open on one side or the other, or conducting in both directions. The WCM is more of a question mark. It tests like a common cathode dual regulator, with signals going from pins 1/2 to pin 3. The signal from pin 2 to pin 3 is uniformly .55v . The signal from pin 1 to pin 3 varies from .65v to 1.0v and about a third of them show OL. Let me know if there are any other considerations here, otherwise I'll see if I get any improvement from replacing all of these.