Also, if you insert the tank into the thingy top first it puts the threads in the cap. Easier to wipe out the cap then the bottom of the thingy. I usually check several times to see what the filler is looking like when I think I am getting close to keep from going overboard.
Funny how this works so well for some and no so well for others, I know I was amazed and delighted when I first saw those air bubbles and I was just putting a tank into a Thingy to drop into my pocket as a spare.
Funny how this works so well for some and no so well for others, I know I was amazed and delighted when I first saw those air bubbles and I was just putting a tank into a Thingy to drop into my pocket as a spare.