I had 2 Profile 1.5 arrive this week and at the moment i prefer the OG, have 4 of them. With my OG's i have never suffered from over squonking but i am with the 1.5's. I am certain my wicking is correct so i think the air holes are lower on the 1.5 and that coupled with a flatter cotton on a wider base means when i squonk there is extra juice in the chamber that the cotton does not soak up as the cotton is thinner and so the juice rises and comes out of the lower air holes, Just my thoughts and i probably need to adjust how i squonk with it.