I just picked up a ROL wheelset and the 1st attempt to mount tires I wound up with low spots where the bead didn't seat (witness line disappears under 2nd "N").

Searching this form I see recommendations for over-pressuring as well as for adding lube to the rim. I'm familiar with seating beads using soap water, but that is only effective at the time. Is there a permanent lube that is recommended to add to the rim that will also be effective when I'm trying to change a tire on the road? I don't care to finish the last half of a ride doing the humpty-hump.