Is your airhole submerged when you tilt your PV to vape? (Air hole could be too big or tank too full). Try orienting the air hole (clean it 1st) so it points up when you tilt to vape, ensuring that it is above your juice level. If this works as a bandage for your problem then the fix is a smaller air hole/ less juice in tank.
1. A good option for an adjustable air hole (takes a drill press, a vice and some work but worth it if it is needed):
Find a bolt (may need a few incase you botch the first) with same threads as the air hole longer than standard but still able to fit under cap.
2. Spin on as many nuts as will fit on the bolt, lining up the outer sides of the hex pattern (like one long/fat nut, used for stability and mass when coring/drilling out the bolt).
3. Mount and center in vice oriented so you can drill a hole into the bottom of the bolt.
4. (Air Manifold) Start with a small bit centered and go as deep as you can withour fear of punching all the way through.
5. Increase in size drill bits and repeat until hole is as large as you are comfortable making it. (Remove nuts when complete)
6. With a dremel cutoff wheel, open a slot in the side of the bolt threads centered and staying away from both ends of the bolt.
7. (Vent Holes, 2 options)
a. You may cut as many as 2 or 3 of these slits evenly aligned around the circumfrence of the bolt. See if 1 fits the bill before jumping ahead.
b Drill a series of holes along the length of the bolt instead of a slit, 1, 2 or 3 rows evenly spaced.
8. Clean up any burs and mount bolt in air hole. The deeper you screw it in the more holes are covered decreasing air flow
9. If you find that you need to turn the bolt in too far (bottom is sitting down too far into tank), calculate and cut a length off of the bottom of the bolt (prior to starrting over) and determine if it is acceptable.
