I have a vamo v3 and have been using an evod tank. I recently purchased a kanger pro tank II as an upgrade for my setup. After a few days the threading on the inside of my vamo head seems to have stripped. I probably cross threaded it on accident but it always seemed flimsy compared to using the threads on the out side of the connector (forgive me for not knowing the terminology here). So my question is this: is there a glass tank bottom feeder that has roughly the same overall diameter as an 18650 type pv that threads on the outside of the head instead of the inside? The pro tank II looks so much better on my vamo than the evods do. What about the ego to 510 adapter I've seen on fasttech? Could this be a solution to use the inside threads without fear of destroying the next mod I get?