You just need to set up your specifications by pressure class. Go to 'Edit Main Database' and to 'Specifications'. Start with a 2" pressure class and enter all of your breakpoints, then apply the spec to your service and make sure EVERY connector setting in each item is unlocked and voila. It should work. I just spent a week sorting all of this in our database. The breakpoints or 'conditions' in the service template are to tell it when to use certain items over others, in the spec, you are using the same item but just changing the connectors. The spec controls everything as long as everything in the item is unlocked. Hope this helps.