I bought a new servo, and it works how it is suppose to, so my other servo was stuffed, i have followed the servo pulser diagram on page 1 by blueroomelectronics and it works, but its jerky and twitches a lot, and it only goes full 90 degrees one way and the other way only goes about 70 degrees, i am using a 5k pot instead of the 2k7, because i cant get one anywhere, does anyone know how i might be able to fix all these problems, i am running the 555 and the servo of 5V (im not going to modify this servo if anyone was wondering) THANKS for any help!!!