All of these servos worked fine when i was using the Hitec servo tester. I would have thought the digital servo would be the first to complain if there were any problems but thats the only one working.

The Futaba S9402 is £65.50. I need 3 of those so its a bit expensive. Ive been looking at some Hitec HS-5625MG digital servos. They are very slightly better than the analog ones im currently using but they are digital so i shouldnt have a problem with them. They are only £35.99 each which is still gonna be expensive but not as much.

I would like to know what went wrong though. I cant believe that 3 perfectly good servos would suddenly mess up at the same time like this. They were holding their positions very well when i was first testing them. There was no buzzing and they wernt struggling to move the skull at all.

By the way, i have completely removed one of the analog servos from the skull and powered it up. Its still twitching. I think its even worse than when its in the skull