When cutting out the 1/4 inch 6061 it is always a good idea to have a cardboard template. I ended up using carbon fibre on the sides but with the main belly I could see if the motor controller was going to fit and how well the computer case would fit into the electronics bay. The cardboard sides came in handy to see clearances to make sure I could still bolt in the computer when when there were sides on the robot around where the computer was going. Templates make for early discovery of gotcha builds.