Membership Plugin not limiting blog creation

I am having a bit of trouble limiting the number of of blogs that users can create. The plugin is working perfectly in limiting those who cannot start a blog, but lets users create any number if this function is listed in the positive part of functionality (I have set a number).

I saw another thread where someone had this problem with group creation. Is there some code that you can show me that I can put around the button on the creation page that will enforce the rules (I have options for 3 different user levels and the number of blogs)?

Ideally, I could replace this button with some text saying they need to upgrade their account (consider this statement a plug for the upgrades feature in the membership plugin as well).

As always, thanks for your help.