Let’s take a look at some Menards O Gauge Buildings 

Good idea using cabinet hinges

Menards makes the best buildings

That’s unfortunate about the Tampa Towers but I think you can purchase the dump truck and pump truck on their website separately if you’re willing to do so. Overall very nice. I’m at about 24 Menards structures now, sometimes they do need a little TLC upon opening them. Layout is looking good.

I like the Menards buildings also. I have about 20 of them on my layout

Menard's has a policy of accepting returns willingly. You can return the Tampa Tower or request the parts that are missing. I think you will find Menard's willing to work with you.