Whoops, forgot to mention your other servo on your red truck.
Where did you get a screw for your servo here? Its perfect for me too. Is that a HiTech servo? I will be measuring my servo bolt (pitch/dia) and will order a very long one if possible.
(also I am using a 1/10 servo for my winch: Hitec HS-645MG / 133.31 oz/in)
Hardware stores in Fresno SUCK. I can NOT find any small metric screws in town. Someone needs to point me in the right direction