OK just one more update.... this may explain why I am getting good results....

http://www.bulbman.com/index.asp?Pag...OD&ProdID=4269

I think this is the bulb, anyway it may explain my results as the light was actually not that close to the frame. BTW... I did think of my eyes and popped the strobe from the other side of the door during my first test.

Does anyone happen to know what these bulbs are actually used for?

Thanks!