Jay, that airplane is a pattern design I started a little over 3 years ago. This is the first revision since the prototype was built. After flying the prototype for two years I decided a couple changes would benifit the design. Those changes were to reduce the rudder overall size but make it taller as well and I lowered the horizontal stabilizer position 3/4". I also revised my fiberglass layup as the prototype proved to be somewhat overkill. The end result is that the revised edition has zero roll couple with rudder and has less pitch couple with rudder application,
Ok back to the Kadet. I'm posting a link to a useful servo mounting article that illustrates an internally mounted servo and a picture of an external servo mount. I tend to prefer the external mount myself as it makes adjustments and maintenance easier but either way will get the job done.
https://www.modelairplanenews.com/ea...sitor_pref_pop