Oscommerce Cre loaded feature

Experienced Oscommerce, Cre Loaded Developers ONLY I have an oscommerce cre loaded store that is used for drop shipping through several manufacturers with many added on contributions. I currently have products from different manufacturers and need contribution to be able to separate shipping prices for each manufacture and adding it before checkout so customer only can see one shipping charge but not realize that two shipping charges are being applied. Right now shipping cost is based on the total cost of items. Example: 40:6.95,60:9.95,80:13.95,etc.. Sometimes customers purchase 2 items from same manufacturer and totals around $80. The average item cost from one manufacturer is around $30 - $50 so I set the shipping charges up to $40 order total,the shipping is $6.95, up to $80 order total, shipping is $13.95 etc...assuming that the customer chose 2 different items from different manufacturers. Average shipping cost from UPS is $6.95. Sometimes this is not the case. Sometimes customers choose 2 items from same manufacturer and shipping can stay $6.95 for first item then add $1.00 for each additional item from same manufacturer and customer saves on shipping rather then the shipping being calculated by order total. We had the vendor shipping contribution added a while ago but customers did not like seeing separate shipping prices for each item as this looks very bad for an online store, so we need a contribution that adds $6.95 for each item from different manufacturers... and additional $1.00 for additional items from same manufacturer. Example: Customer orders 1 Sony item, and 2 panasonic items. Sony adapter: Shipping $6.95 Panasonic control: Shipping $6.95 Panasonic cable: Shipping $1.00 ----------------------------- Ground shipping TOTAL: $14.90 ** Customer can only see TOTAL