Here is my example:

For a product with a weight of 144 (which is set as ounces, and calculates as ounces in UPS still, which correlates to 9lbs) and a max package weight set at 40lbs, anything below the 40 pounds (so 4 items in the cart, totaling 1 package) calculates correctly. If you add one more item (making that 45lbs, so now UPS should be calulcating it as 2 pages, one at 40lbs, the other at 5lbs), it throws shipping in the cart way off.

Shipping for the 36lbs package was around $42, but shipping for 1 40lb package and 1 5lb package came out to $900.

I have my weights configured in ounces because that is how the cart is currently correctly calulcating shipping costs. I do have another product with a weight of 9 that doesn't charge enough for shipping. I was told that the cart should be calculating product weights in lbs, it's just that the documentation hasn't been updated yet to reflect that change.

Well I can say that it's not calculating product weight in pounds, because otherwise the example above with the 144 set as the product weight woulnd't work.

-Mike