I need to split a listing because it is too heavy. How do I set it up before a buyers pays?

[mmont_3189]

I need to split a listing because it is too heavy. How do I set it up before a buyers pays so they are not paying 2 separate shipping charges? 

[klhmdg]

If you split it to 2 listings - the buyer will have to buy both listings.

It might help if you come back and let us know what you are selling and be a little more detailed.