I have a pair of Indy Hollows with the Forged baseplates and the bolt holes and kingpin on one of them is pushed to the right a bit. This has happened to me a few times earlier with Thunder cast plates as well.
As long as you can get them on the deck with no problems, I don't think it really makes a difference though. Trucks take all types of abuse, so a minor issue like that shouldn't impact performance.
BTW, what trucks do you have?