When I have quantity discounts added and no attributes, the prices for quantity discounts calculates perfectly in the shopping cart.

Example:

http://transportation.actionforms.ca...oducts_id=2002

But when I have the same product with attributes added (3 text boxes) the pricing only ever uses the base price, no matter what the quantity added is

Example:

http://transportation.actionforms.ca...oducts_id=2004

This site is live so this is proving to be a big problem. Any help would be appreciated.