Attribute weights not working

I have two products set up to have the weights and prices based on the attributes. Both products are the same (I copied one from the other). Product 1 will calculate the weight correctly in the cart.

Product 2 never shows any weight in the cart or shipping estimator. It shows up on the product page correctly under the attribute section (just like product 1). I have no clue where to look or what is wrong.

I set up product 3 to be the same and it doesn't calculate the weights in the cart either. I can add all three items to the cart and product 1 is the only one that puts weight into the cart.

I have compared all three product listings and the attributes. They are spot on identical.

Any help is greatly appreciated!

Zen Cart version 1.5 and using UPS and USPS shipping modules.

A link would help so we can see the issue for ourselves. I just added weights to two sample products' attributes in a stock 1.5.0 test site and the weights are added to the cart total and shipping estimator as expected.