Ok, so a customer of mine put a few things in her cart, used her friends & family coupon code, and checked store pickup. The total in the zen cart is fine.

As soon as she gets to the Paypal payment screen, it adds $3.95 for shipping. Now, I don't understand why that's happening. I do have a few paypal shopping cart buttons that I use for another product to save customers shipping on very small items, but would that have anything to do with adding shipping automatically from my zencart?