For good ackerman angles, mount the servo so that the ears are almost in contact with the back of the front suspension. I mount my servo flat for use on carpet. Also, for ackerman, I mount my ball studs with the balls forward and to the outer-most holes, and will level the turnbuckles by shimming up the studs mounted in the steering blocks. If at all possible I back up the studs with mini 4-40 lock-nuts, or 4-40 flat nuts and superglue where the stud pokes through them. On my servo saver I have made a CF backing plate to help keep the servo saver from distorting and flexing while steering.