jethead,
As far as the OS 91's, you may not have deadsticks! With over two years on my F-15, it has yet to die in the air. Plugs last a long time too.

McCoy MC-9
Tom Cook (JMP) System II bifurcated pipe
Tom Cook (JMP) Inflight mixture control
Always used 5% Magnum Jet Fuel
Twin 12 oz fuel tanks plumbed in parallel with no header tank
Ramtec Fan w/pitot pressure probe
Over 120 flights (~8 minutes each)

Good Luck!