r6731

each red polygon is 121x121 pixels (100.833 x 100.833)
each blue polygon is 121x121 pixels (100.833 x 100.833)

clearance 23 pixels (19.167)
copper width 95 pixels (79.166)
drill width 39 pixels (32.5)

lower two vias are cleared with only 23 pixels (19.166)
