Hi Folks- I am looking for the size of the mounting screws that one would use to attach the truck sideframes to the geared power truck of a Williams by Bachmann GP9. I am also looking for the size of the motor mount screw and washer, which attaches the vertical can motor to the GP9 truck. Does anyone know what size screws would do the job for both- mounting the sideframes to the truck, and the motor mount? Thanks so much...