Need Bug Fix for Custom Shopping Cart Feature

I need a bug fix for a custom feature of my shopping cart software for two websites [login to view URL] and glamourbeautycenter.com. They are both identical, the only difference is the template. When you click on the "manufacturers" dropdown in the header, the feature is supposed to display every product associated with that manufacture and organized by category. After we upgraded the shopping cart software, this custom feature was broken and the correct products are not displayed in the right categories. Also, some of the products are not displayed. For example, For the "Bio Ionic" manufacturer instead of the child category "Flat Iron" being displayed, the parent category "Tools" is displayed. All the child categories should be displayed and the respective products associated with each sub category. [login to view URL];mode=manufacturer&mid=18 Also if you take a look at the "Brushes" category, there is only one product and the rest of the brushes are under the "Tools" category. This is not correct. It is also an error that there are two "Tools" categories. "Tools" is a parent caregory and should not be displayed unless that is the only category a product is associated with. We are using Pinnacle Cart. We need a developer to fix the bugs for this feature and apply them to both websites since they are identical. This is a simple bug fix and we estimate it should take no longer than 3-4 hours to an experienced PHP developer.