I know the general aspects of RC planes but servos are my main weakness, my question is can I use any servos for most RC planes? How do I decide on what servos to use for example my p-51 from top flite has 3151s and 3152s, and my throttle servo has enough torque for the recomendations, also what is the difference and is there a differnce in performance in digital servos besides the response time? I know I have to use certain rx for my tx but for servos is my problem in understanding. Since I have someone who builds my planes to save me time as I have no time with work and my fiancee to build my own I just would like to learn the basics of servos and there function and how to choose which ones for a certain plane. Thanks again fellas.