[Breakaway3937]

I think I know where you are going with your design.... Anyway, have you tried the caster wheels on the edge of the scoring ramp. We use casters as part of our prototyping for quick chassis builds and the casters always want to go down the ramp and when you are driving parallel to the ramp, you will be scrubbing your wheels causing a lot on inconsistency in you drive. Just want to throw our testing out there. Good luck with the rest of your design. You have a good start!