So I have an Altsmoke 901 to 510 adaptor. If I slap one of these bad boys on that, will it work?? Also, I have a 901 to KR adaptor from Vaporcountry and the draw is wayyyyyyyyy to light. Is the draw better on this?

It's just like the normal thread 2 hole with a slot. I think the draw is perfect with it, and I don't have any complaints. The one from vapor country was too light, and I always had to close the hole up a little bit.