BVH
Flashaholic
To maintain "focusability", there's a way to compensate for the 1/32" to 1/16" or so distance the bulb should be raised. I have to find the right part (washer) to modify but all one needs to do is to disassemble the switch and place a 1/32" to 1/16" spacer between the top of the bipin slug and the metal casing it goes into. This will lower the slug and bulb in relation to the reflector. The outside diameter of the washer will be about 27/64" and the inside should be about 5/16". Be sure there is no slop in the fit of the washer into the metal casing so it can't move enough to short out the two bulb pins.