So I got my first mod and it is a telescoping. I was so excited and went and got a Kanger Protank 2 to put on it. To my dismay when I put the tank on the mod and snugged everything up. The adjustable center pin would squish the insulator and the Protank would loose all of its draw. I discovered that I could put the base of my Mini-Protank 2 on the full size Protank 2 and it switched it over to ego threads. This allowed me to snug everything up and it works beautifully.