Is it possible to have two separate shipping locations without the shipping costs stacking?

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I recently went to a local printer to sell clothes for my website while selling Printful products as well. As a result,  my store will be selling products from two locations: from my home and from Printful. I have one shipping profile with two locations and the shipping costs are dependant on the weight of the product. The problem is that when the customer buys a product that ships from my home and a product that ships from Printful, the shipping costs are added together. For example, if the product ships from my home, it costs $5 and the product that ships from Printful costs $5 as well, the customer ends up paying $10. Is there any way so that this doesn't happen? Also, if I remove one of the shipping locations, an error occurs during checkout saying that the product doesn't have a shipping cost enabled.