I seem to have this issue as well. I have even went as far as placing Both hobby servos (ES08A's) side by side and controlling them both from Pin 9 at the same time. Once thing i have noticed is...After about half an Hour of playing with them and letting them run. I can now get upwards of 178 degrees outa them before the symptoms show up. If i keep them 175 degrees or less... everything seems to be okay. I'm going to leave them alone a while and let them...Cool off... and see if i have the same thing happen all over again when i start playing with them again.