Tekin fxr gelande 2 servo twitch
 

Recently, my hitec 646wp servo started to twitch heavily when I accelorate. I'm running a tekin fxr and spektrum receiver on my gelande 2 d90. I have spoken to customer service at hitec and they recommended that I install a glitch buster or new capacitor. I installed a racers edge glitch buster and it seems to be of no help. I have a new capacitor that I could install but the capacitor doesn't appear to be blown. Please help so I can get back on the trails.