I see that there is a code 'u' to do a ups lookup. This apparently is done using the weight of the whole cart. If I have 2 items that each weight 100 lbs., I get a $0.00 on shipping because of the 150lb limit. I see that there is a code 'i' to handle shipping computation on a line item basis. Is there a way to do both? ( 'ui' ). Peter