Darticus,
Sometimes it's a hard one to figure out. Is it the TX or one of the three servos? My bet, would be a servo that is starting to go on ya.
Try plugging and unplugging the battery to the heli, wait for it to arm each time. Listen and watch the servos. If you hear any buzzing or see any of the servo arms moving at all, that one would be a suspect. If you see that, swap two of the servo at the receiver and retest. If the same servo makes funny noises or moves, then you pinned it down... It may take a lot of testing. And may not fail right away.
Hope this helps,
Dave / Choppersrule
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ORIGINAL: darticus
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!