Awesome thanks ^w^. I'm still working on measurements before printing it. The mod is going to be flat top on front, rounded in rear with a cut out opening for the bottle. All I need to measure is the hight difference and how much of a opening I'll need to make for the 510 and the distances from top to the bottle midway.In US BroScience Vapes, ordered and received in around 2 days, a lot cheaper than ordering from U.K., I just paid more for a large positive nut from the U.K. than I did for 2 mm bf 510's because of overseas shipping.