Having issues with product not calculating correctly.

Hello, 

I have a form that I am preparing for our technicians to use, and the issue I am having is that I have a calculation of a product in a total column, which is working for some fields but not others. It's working for half the form and not the other half. I have change the calculation field to calculate the corresponding text for those fields. Can anyone help me figure out why this is happening when the calculations are the same? I can upload my document if needed. 

Thanks!