I sell Home Theater Equipment, which can include stereo equipment and TVs. Occassional customers will make orders over 150lbs. UPS has a limit of 150lbs per package, which is ok because no single package will be over 150lbs. However, there are occasions when multiple packages will weigh over 150lbs. I have selected the "Ship Items Seperately" option in the Shipping Settings, but when I make a test order that weighs over 150lbs, it says that the maximum weight per package is exceeded. How do I let it know that they are in different boxees?