RE: setting up expo on a warbird ?
This is a subject that I have heard a lot of discussion on.
Basically, in my opinion, there is no solid answer that is correct for each plane/pilot/radio combination.
There are too many variables to consider to make this a simple answer.
The FIRST order of business is to make sure you have the plane setup properly.
Starting with making sure you are happy with the center of gravity and including proper setup of the geometry of the various control linkages.
Only after you have fine tuned these as part of your preliminary test flights, should you then go ahead and start using the computer radios various tweaks.