Good news Andy!
Will be interesting to see how it performs.
I threw a KSC5026 (800V To126 NPN) at the curve tracer to see the gain, or lack of. I've attached a comparison to a jelly bean bc546b that was already in the 2nd socket. This is a 30V sweep with 10uA base current steps, the display uses the same scale for both ...
I think the hysteresis on the bc546 traces are due to self heating
dc