u/CancerToe

I got this set as a gift last week (purchased from Costco) and just opened it. When laying out the bags, I noticed i had a duplicate #4 bag and was missing the #2 bag. For anyone whose built the set, was this something you ran into and didn't have a problem completing? Or is this an error and needs to be returned? I'm just trying to do my due diligence before attempting to return. Thank you!