I must be living in a differant world as I have just never have had any issues with on board start gas. When I fill my tank and see that the liquid is slowing down I turn the bottle over till I see no liquid in the line, then I purge the start gas valve using GSU and it is good to go. I do have kero start and gas start JC and when I follow this procedure the gas start is cleaner than the kero start. The only reason to shack the model is when you relize that the on board tank is running low. I do like my kero start turbine but with years of gas start and no troble what so ever I will not change any of my gas start turbines over to kero, only when I buy a new engine.

John