It is "absolutely" vital that before the scoot company mails your new fuel tap that you ask them to wiggle the straw(s) and if there is any movement to get a new one or you will need to solder it. I have heard that fuel taps are hit or miss.
This is how my set-up looked before installation, minus the plastic catch-all pan pictured below which sits in the frame beneath the gas tank to capture any drips. I had to scrub it first. Note in the picture above that fuel tap almost looks stocks. Make sure to install your fuel tap and set the tank up in a box vertically for over night to ensure that you do NOT have any leaks.
Inside the gas tank before I put the catch-all pan and the gas tank. Note, that due to the fact that the gas flow works on gravity, I shortened the fuel line so it traveled "down hill" as much as possible.
To install the gas tank, let the fuel "On/Off" lever dangle almost vertically down until you can "roll" it through the frame. I failed to do this and in doing so broke the end of the fuel lever. What a pitiful shame.