I think I can shed some light on that with my theory. I believe that most people don't read the manual or watch videos about the mod. Since the mod has a slight learning curve and does things differently than most of us vapers are used to I think a lot of people get very frustrated with the mod quickly. I know I would have had it not been for
@raymo2u and his thread. I think a lot of people send them back thinking the TC does not work and that's how they have a bunch of refurbs. Look how many people here got frustrated very quickly and swore they were going to throw the mod up against the wall or sell it because they just didn't have the knowledge to dial it in. It's unfortunate that we live in a world of such impatience but hey better for me because now I can get a rocking deal on a refurb. Anyway, that's my theory on the refurbs. Next time I talk to HT I'll be sure to bring it up and ask why.