Last minute upgrades

The robot has wheels that are too small for it to be invertible. Solution? Make the wheels bigger. They should give me about 5mm more clearance either side, if I have an extra layer of plastic on the top, it'll be 3mm more. The bottom will be unchanged though, aside from that extra 5mm or so of clearance. Should be ideal, makes me more susceptible to flippers and the low drums but I can no longer be beached which is much better!