Unfortunately the 555 has the same results. Again the scope shows quite a good signal. There are very slight variations in the line but they are present even when nothing is connected to the scope. They definately wont cause this problem. Ive zoomed right in and measured the pulses and they are identical width.

I accidentally extended the pause time through my PIC circuit to 30ms and they were twitching even more. I would expect that from analog servos but it seems that if i gradually decrease the pause time they gradually become more stable but 6ms is the shortest i can go to and at that they are back to buzzing and only moving very slightly. Its like the pause time the servos require has become shorter