I got one of the A7's because I thought I'd like the air coming through center post and being able to adjust it with center pin. The adjustable pin is nice for making contact on different mods but it doesn't seem to effect the draw like I was expecting. I think it's because of the air holes on the sides of the connection. The draw is a little airier than I like. I've been trying to think of how to tighten it up a bit and was wondering about restricting the drip tip. Has anybody tried this? Seems to me like the results would be the same no matter where the restriction is. I could block off one or both of the side holes on the connector but it seems like the drip tip would easier. Anybody done this or can tell me why it wouldn't work?