At the end I can not post pictures sorry.
Well what if you understand me explain having.
At the top of the tank and you take away the rubber cap has 2 screws,
You will note that I left the hole into which the gas, as the two tanks that I have are different.
In the bottom part but not in the center but on one side there is a kind of channel that goes to the middle because one of them is open, and the other two are open.
If you need the shipping, have if you can help I'm going crazy with this.
regards