[MichaelBick]

1/16 is probably not enough drop on an 8wd. You actually want more drop on an 8wd than on a 6wd. 12fps seems a bit low for a 2 speed drivetrain(what efficiency is this). Usually you want to gear a bit faster to take advantage of the 2 speeds. Also that lightening pattern looks hard to do. It's a lot better to make the lightening pattern out of round holes because it is easier/faster for the shop.