I bought power pack a from flitetest, built plane, and flew it, first time ever flying rc plane, did great, but plane seemed underpowered, then I saw where you're supposed to calibrate esc throttle but on flitetest videos and everywhere I look they say put throttle up and plug battery then 2 beeps ,lower stick. My esc is a flitetest brand 20 amp, so I can't look up manufacturers instructions, when I raise throttle and hook battery it plays a tune then 1 beep and another tune fast then nothing, so I lower throttle then more tunes, motor runs , maybe the way it should but not sure, do the flitetest brand esc need to be calibrated and if so how?