I can not get my sterring servo to move how it did at first I took the horn off so it can center but it will not turn good it goes to the right kinda slow but barely turns to the left what could I do I want it to turn equal both ways

if it's the stock rtr servo....with plastic threads....there ez to break. there junk

A servo moving slow isn't the same as a servo that doesn't center the steering. Sounds like either your servo has internal damage, or there's some sort of binding in the steering parts.

Once you have the speed where it should be, you center your radio trim, turn on the power, and set your servo horn for 90degs to either side of the required travel. (that sounds wrong, but I am failing to think of better wording).

If the wheels arn't centered after that, you may need to adjust your tie-rod lengths, unless it's very minor, and then you just use your steering Trim.