Yeah, I've done that several times, but no. I checked and re-checked the inserts and they're in their correct orientation with the overhanging piece at the 12 o'clock position. Even tried switching it around to see if perhaps these caps were just different. No dice. The o-rings solved the problem, but it makes the caps sit about half a mm higher than the rest. Not really that noticeable and I didn't want to go carving around on new caps.