I FIXED IT!!!
I've been very underwhelmed with the performance of the Terralux upgrade in the MM, so i purchased the BA1 adapter and dropped it into one of my 2C MagLites, that cleaned up the artifacty beam substansially, but introduced a new problem, the beam was too tightly focused when focused to a spot, the term "pencil spot" is very appropriate here
so i looked around my pile of accesories, found one of my rubber "anti-roll" head cover thingies used on the C and D cell Maglite, *AND* one of those large lucite "Light-Gathering" magnifiers, you know, that lump of clear lucite you put on a newspaper to magnify the text size, it's basically a light-gathering collumating lens
when i held it on top of the anti-roll thingy it tightened up the beam considerably, so tight that it projected an image of the LED die on the wall
so with a little brute force, i jammed the lens *inside* the anti-roll device, then slid the new lens assembly onto the flashlight head, it held securely, i lit it up, and found i could go from loose spot to a spot so tight that an image of the die is projected onto the surface....
when the lens is defocused enough, it throws a nice, smooth, wide spot of light, and when tightened down it *really* throws far
the only drawbacks to this setup are the light is no longer pocketable, and it's a little front-heavy, but i can live with that, this thing's now a real UV Throwmonster!
here are some pics of the light itself;
some pics of the beam pattern;
Tight focus with reflector only;
Wide spot
Tight spots;
and finally
a QuickTime movie of the tight-to-wide spot focusing