Hi Rich,
Congratulations on a great find! Those B42's are indeed rare, and the fact that you were able to get it running is the cherry on the cake. It's remarkable too that the whistle cap was intact, especially with the damage to the other side of the engine. I was so stoked when I purchased my B31 with the unbroken whistle, that I completely missed the fact that it had no heater.
Anyway, loved the videos -- your becoming one of the resident experts on the Empire brand! Have fun!