Bumper corners

[Mikell Taylor]

Please forgive a silly question, but this is actually my first time being involved in a build since the dawn of the age of bumpers (with last year being an obvious exception) - can you round the corners on the plywood backing of your bumpers, as long as the other dimensions are as specified in the manual and you have your eight inches of coverage each side of the corner? Or are they required to be square? Only asking because we have some tight tolerances with respect to the boulders at one spot on our robot and the rounded corners might make a difference.