I have a great planes christian eagle 2 arf with a fuji 50 BT gas engine on it. This is what the review used and for some reason I cant get past 6600 RPM with my engine. The review stated they use a 20X8 prop and thats what im using. The only diff is they used a top flite 20X8 prop im using a master airscrew prop. The review stated they ran ar 7420 RPM and if i try and lean out the engine it bogs down and dies, so i kno wits not my high side adjustment. Any idea on this ?

There are a few possibilities, A. is that there is enough difference between the two props to make the RPM differenc. B. your engine is not as broken is as their engine, C. your fuel /oil combo is a little different (less energy) D. your engine is just exactly the same internally as theirs. , E. Temperature, humidity and altitude all may be different. AND finally F. All any combination of these.

well i guess mines still breaking in, but thas a big difference. But it still pulls it okay, i guess i can email fuji, thanks.

I wouldn't worry about it too much until its broken in better.