Oh man, good thing you didn't get the tsunami. If you are having leaking issues on velocity, tsunami would never of worked. That thing pisses
juice when you screw up. If you are getting leaking from the side, then you are over dripping. I just drip right into the drip tip. With a dropper it's fine because I know how much it can take. Sometimes with plastic bottles such as unicorn bottles will over drip if not paying attention.
But drip through there or unscrew the drip tip. It's how the device was designed to be used.
Condensation and
juice popping and hitting the wall is normal as the above poster mentioned. You will notice it after some time and when you turn the air flow. It will need to be wiped down from time to time. The orings are garbage and will break easily, be sure they are lubricated when putting on the cap.
I removed the hollow pin as soon as I got it and nothing came off, so whatever came off you did the correct thing by putting back .
Cotton you will know by tasting it. If you torched it yeah, but just a dry hit is completely normal.