I'm using Commerce Shipping Postal Code Weight to configure weight based shipping very happily. However, I have cases where I need to use flat rate shipping for certain items. The issue is that I don't know how to resolve the conflict between the shipping services. The particular case I have is that the weight-based shipping charge is less, and I don't want to show that to the customers.
So, how do I set up the conditions, where different shipping services are called?