BlazdiqFoods
Head-Fier
What did you use to block the vent hole?Fwiw I'm using the BGVP filters with the vent blocked and a small piece of foam inside (see picturel), I don't know how this compares to the filters modded by @tgx78 bit I'm totally digging it. I also agree that the shorter filter may be better ergonomically for some people.