Just a quick note to new owners - When I was installing an upright to the router clamp one of the screws broke through the router clamp requiring me to order a new one.
I believe this may have happened because I should have walked the screws around while installing. Instead I think had the upright crooked and the screw tried to pull the upright into the clamp breaking the hole whose job it was to hold the screw head.
When building make sure the uprights are seated into the clamp properly and drive the screws in thirds in sequence until they are tight to avoid what happened to me.