Welcome to our cozy community, Mr. Vodka! I've enjoyed your family's fine beverage for many years.
Please feel free to post a link to an mp3 here and we'll try to offer a diagnosis. However, as littledog pointed out, unless you have the individual tracks available for remix, your options will be rather limited. I gather you went to a pro studio, and that's a good thing. A lot of people underestimate how much time they'll need to get the mix right, though.
If you plan to remix to correct the problems, I'd suggest you reread Shailat's post. Man knows his stuff. If you read it, but can't make head or tail of it, go find Sonusman's Secrets of Mixing thread. Hell, go find it anyway. It's a godsend. Use the search function. It's here in the Mixing/Mastering section.
-kent