This is how I modify my caps
^Heres what u need. The ink tube is out of a Gelly Roll pen. Its larger than regular pen tubes. Some Gelly Rolls are too big. You need the tube that is 11/64" in diameter. The drill bit is 1/8". Of course u also need a drill.
First, Bore out the ink tube with the drill bit. Try to drill it straight.
Cut off a 1/4" piece of ink tube
Cut off half of the cap stem. It doesnt have to be perfect, but try to do it as straight as possible
Now, slip the ink tube onto the cap stem. (It will be a tight fit) Thats it!
As you can see, there is a gap between the cap and can, but the cap doesnt wiggle or move. It works great. If its too high for you, you can cut the cap stem shorter but u will need to super glue the tube on.
Yesss. I know i could just use the sekt adapter, but I never buy stuff I can make at home. I had all these things laying around at home anyway. Ive used many caps like this, and even with no glue I never had one leak yet. Enjoy.:)