I have a weld neck flange I'm inserting into a multi-body part. After using mates to position everything, I need to rotate the flange to its proper 2-hole position (2 bolt holes straddling the 12 o'clock position instead of 1 hole at the 12 o'clock position). But, I can't figure out a way to do it. I can't see any reference geometry in the original part to use to constrain the flange. Any ideas?