yes they should be seated a little better. Small gaps are not critical. No need to fill with epoxy or anything. But they should sit pretty flat at the bottom of the port, and each of them the same. Too late now however, because the retaining bolt holes are already done, they would go out of alignment if you changed the positioning of the lumps now.
When you say it's too late because of the alignment, is there anything else he can do to rectify the situation?
