^^ Mine also came from the factory with the weights on the inside. No problems yet through 10K+ miles.
Yes, my LTZ rims are quite different, but still, if I were in your situation, I'd be wanting them on the inside too...I'm sure it can be done.Well WTH, wonder why mine are on the outside? I see both of you have RS package. you must have different rims then.
here is a pic.