Check this out! Yesterday I got it to hover perfectly without any twitching. What a delight! Ran two packs and perfect. All I did is move the one trim lever, front to back lever, to center, as it was an 1/8 inch toward back and all went perfect. Today all was bad again, twitching real bad, so I landed jiggled the right lever gave it throttle and perfect it went. I landed to check again, took off to see what would happen and it started twitching again, landed again, jiggled the right lever and perfect it was again no twitching. When it takes off with no twitching its fine for the total pack, perfect! OK where is it??? Radio or servos or what??? Any suggestion would be great!