Thanks for the link.
So, after listening for numerous hours over 2-3 days, the fit gets better, but there are certain sticking points that I'm unsure will go away. The right piece has a pronounced hook (compared to the left) that goes into the top of my ear, and I believe it's the source for the discomfort. (Ironically, it probably contributes to the better seal) The left is a bit painful, though that may just be the ear fatigue talking. It still slides around a bit more than my liking, especially during long session with the moisture/oil and all. I'll take a 1-2 day break, and try again see if the feeling changes.
If I were to ship them for a refit, what should I package them in to prevent scratches/damage? Preferably something small to minimize shipping costs.