Thanks for the feedback caloso and AEO.
Caloso, thanks for providing a pic to explain the difference. That really helps.
AEO, I will try lowering the psi when seating the tire. I noticed some advice you gave the guy with the Mavic Aksium wheels - you mentioned to inflate the tire to about 20 psi over max psi rating to see if it "pops" the tire out. Is that something I can try too? Or is that more of a road-bike thing?