Welcome to the forums! I look forward to seeing your builds.
That Revell Missouri is one of the oldest kits in Revell's catalog. That tooling was first done way back in 1953. Though it's long since been overtaken by more detailed and perhaps better-engineered kits, it's still a favorite of a lot of modelers. I built it as a kid, in its New Jersey version. Don't let it get you down, but have fun with it!
Best regards,
Brad