Hothead, you should mount the ignition as far away from the throttle servo and receiver as possible. Most folks mount it right behind the engine strapped to the firewall with zip ties and foam padding to protect from vibration. You can go to a smaller fuel tank also, 10-12 oz should give you an easy 15 min flight. These things sip gas. Good luck Go to this thread for all the info you can use on gas engine install and use http://www.rcuniverse.com/forum/m_8673009/tm.htm