[Gary Dillard]

The ball at the shooter is just to get the vertical spacing right; we've cut the numbers but haven't put them on the bumpers yet - still not sure which way we'll go, but for the image we put them both sides on front.

We've found that these balls are fairly insensitive to the compression as far as either slipping or binding - the 6" 2009 wheels are 3.375 on center (2" spacer at the hubs) we have about 8.5 inches from the plate to the axis of the wheels on the conveyor and close to 10 inches (barely touching) on the shooter. I'm sure there's some optimum spacing but we just picked one on each of the prototypes and they worked well so we stuck with them and designed around them.