I Have Been Using The Straw On About 6 Different Atoms for Over 6 Weeks. I Think It Works Great! The Plastic Straws Still Have No Melt Marks Or Signs Of It. I Think U Should Have The Straw A Little Below The End Of The Depressed Filler From The Top Side / Thread Side, Even Lower / Shorter Or A Little Covered Its Still Going To Vent & Work. The Metal Needle Is Not Necessary But Its Your Option.
~Keep Vapin~!
~Keep Vapin~!