Hey, all. Thanks for the great information on this forum. After reading reviews and whatnot, I'm seriously interested in the GGTS. Only problem is, I own about 100 M401 Atomizers. I'm curious about the reason that none of the modders use the M401 and / or sell the 501 / M401 adapter. From what I can tell, it would just be a barrel connector (same threads on both ends). I have a couple of custom jobs on order, but I like the M401 atty so much, it just surprises me that noone designs for / adapts to it. It looks like the GGTS adapts to everything but the M401. Imeo, Why the exclusion?