Need help with west coast drive.

[JoshD99]

We are building a West Coast Drive chassis for our t-shirt robot. We have never done this before, but we think we know what we're doing. The only problem is that the gearboxes we're using, if we mount them directly to the wheel, will drag on the floor, as we are using 4 inch wheels. What can we do to fix this? Here are the gearboxes we're using http://www.vexrobotics.com/vexpro/ge...reduction.html

Thanks!