Wierd Tramission/Reception Problems with Futaba 6x Super Radio
Have you checked the antenna on the receiver to see if it's intact? If there are any breaks in it at all you could have problems like that. And the servo's twitching when you're touching metal bits with the xmitter close to the receiver is normal, you don't actually fly this way so ignore it, so long as you get good range checks. Sounds like the receiver itself is dead. Or injured.