Hi, im using the ceon advanced shipper and I cant seem to find anything on it anywhere so thought someone on here may be able to help?

Basically I have it set up to use a few different shipping options as we have a huge aray of different products which need to be send via different methods, the problem ive encountered is, we have very large items which offer customers a 7.95 courier option on the advanced shipper, we also have smaller products that offer customers royal mail options, we never want the customer to pay more than 7.95 regardless of how many items they buy, but if they are buying a product that the advcaned shipper knows to offer courior 7.95 but are also buying a smaller item that is say 2.95 to post royal mail, how can the two prices be combined and discounted so that the total postage is never more than a certian ammount, say 7.95? As at the moment the two seperate prices will be shown to the customer and theres no way of having a cut off price of what can be charged.

There must be a way for this to be set up on the advanced shipper as its such a vast and complex module and seems to fufill complex shipping like ours but I have no idea about programming so am completely out of depth and wondering if anyone has a clue how to solve this?