Sorry, Bob - just saw your question !
As far as I know, the only "Legit" source for Leadlight is the ebay seller, Vital spirit. The 105 is moddable, whereas the 110 is not as good for modding. I think Atlas Nova also sells leadlights, but never dealt with him, so cannot say for sure.
In all honesty - the only realy way to get a powerful green is to pay for one - you can mod all you want - but after the day is done - the lifetime is shortened VERY much, if not gone completely from one wrong move with the potentionometer. If you love the gamble, great - do it ! If not, then save up for a decent laser - heck, even the DX lasers are cheaper than most leadlights, and will give you more bang for your buck.