This module works great for all my projects. There's just one thing I'm trying to modify without any luck. I have one site that's doing paid classes that use the paid events module. Right now when the classes are full, which is set by the stock levels, it says "Out of stock". That's fine for now, but I would love to figure out how to have it know when it's an event, say something like "Classes are full" instead. I've been trying to do this from the template.php file, but haven't had any luck.