Where to place the boltsnaps on sidemount cylinders tanks

https://www.youtube.com/watch?v=DIJbChCtdi4

Install a tank valve / Replacing your tank valve o-ring

Properly Install A Tank Valve Replacing Your Tank Valve O-Ring

Apeks DST 5th port conversion

https://www.youtube.com/watch?v=7xUzN7lbpfk