I used to have a RAM 500, it was my first Turbine
It taught me many things about Turbine operations and how to repair them

My recommendation would be to ditch the on board "co2" tank and directly connect, see
http://www.rcuniverse.com/forum/m_63...mpage_2/tm.htm

You then can regulate the gas flow manually, if the pressure drops off on the propane bottle, just shake it and it will rise back up

As others have mentioned you have to get the parameters just right, once you do she will start every time...until the weather changes[X(]