Has anyone used two main co2 tanks each with 5lb co2, both valves would be opened at the same time, so the whole system is pressurised with an average pressure of 850 psi each tank, so both feed direct to the main firing ball valve, rated for 2000psi all lines 3000 psi rated. so my thoughts on this is one tank would be acting as a buffer but is removed to be filled ? thoughts ?