Response from LEGO SHOP
2 July 2020
Emily, Customer ServiceThanks for your review. If Bob's smile isn't up to snuff, you can request a replacement over at LEGO.build/BricksPieces-BV. If the pieces aren't fitting together tightly, that's likely a sign that something earlier on's a little out of alignment. Rebuilding should do the trick. If you need a hand troubleshooting the build, you can get in touch at LEGO.build/Service-BV.