[BASE]

I've always kinda wondered how far off one would be if the caps were switched, but I never think to flip 'em around and see when I have one apart.

I would try and see if you can feel a ridge in there like mentioned above. You may get lucky and have them be far enough off that you can notice. If you have some telescoping gauges you could measure at appropriately clocked angles it might help. If there isn't some sort of measurable offset than maybe it doesn't matter.

I've wondered what I would do if in that spot and that's the best I've been able to come up with.