What are aircraft are you using? There are different issues if flying a single engine fixed prop, versus a single engine with a constant speed prop (can adjust the pitch of the blades), a turbo-prop single versus a turbo-prop with multiple engines, versus a jet/fan-jet with a single or multi-engine set-up. We are more than happy to put our 2 cents in. With all of the people here, that could turn out to be quite a sum of money. :mixedsmi:
With that said, are you flying the radial or turbo prop?