Model PP-12-L. I still have it if anyone's interested in it. I'm not.
I even hooked it up to an o'scope to see what's going on. There's definately a pulse there, but it's of such short duration that I couldn't get a good read on it. Not sure if the scope is too slow, or perhaps the trigger circuit is slowing down the response. FWIW, the scope is a Tektronix 465 dual trace.
Even a 20 or 30 amp pulse current doesn't pack much poop if it only lasts for 10 microseconds.