servo horn problem

It seems that the servo horn is slightly loose eventhough I have the screw all tighten and what not. This looseness cause the car to turn slighty right as the left front tire points inward due to the servo being loose. Is there anyway to fix this?

[Capt.ArD]

i've never heard of this happening, but if you can get some small washers or wheel shims, put one or two on the screw so that it gets better contact with the horn. hope it helps.

i dont think that will help because i believe its loose from the inside