What we need is a head-to-head RPM check of the .55AX, and the EVO. That would yield very interesting and useful information. Since you have both engines on hand, is there a chance that you could do this, and post the results?
-Robert
Robert,
Great suggestion and I have the test stand/digital tach ready. The only thing I will have to wait on is the warmer weather of Spring. The last time I broke-in an engine within the hangar here at work, I fogged out the whole place. The maintenance techs were ribbing me for a week! Something about the odor of castor oil residing in their uniforms! I never did see the problem...
Sean