I had regular servos in my Freestyle and they were fine. My Wildstlye has minis because I had them lying around. I have added about 1 1/4 ounces of weight to the tail because you cannot move any of the equipment around without cutting up the covering. Which by the way I have already done twice. If I knew in the beginning that I would have to do this when sorting out the CG I would have used standard size servos. BTW, the digital servos when used with the large tail surfaces set up for max travel tend to oscillate (like the pot is dirty). Standard servos do not do this.