Problems moving a servo with analogWrite or the Library

I youst sought it must be posibil because the interesting thing is:
The servo has a nearly 80° bigger range (normal range 120°) when you give him a direct signal via the analogWrite(pin, value between 0-255:)
Only I have this shitti random-errors.
But do you know how fast I damage the servo with this?
And the clou is: when the servo moves that big range with the wrong PWM signal: coudent it possibil move it whis a changed library in the normal way over the ppn???