Hi Spike,
First, I think you do not need an extra bubler....but you must decide on that.
Secondly, try to light a torch with your gas output and make a nice vid of that!
Third, try to ionize the gas.....see
http://www.ionizationx.com/index.php/topic,407.0.htmlFourth is to add an air ionizer on your engines air intake.
It seems to me that you have enough gas now. The problem is that the energy state of the gas is not high. Resulting in you creating more and more gas.....That is not the solution. We have to change the energy state of the gas, so we do not need so much of it....
It is possible to run a small engine on the amount of gas you have, btw. Even if it is not higly energized.
It will only run if your gas is NOT underpressure.....and that is dangerous......backflashes....hrmmmmmmm
Riddler can advise on that part..
br
Steve