OPIM Bill of Materials Has Incorrect Rating for Gaskets

I am using AutoPLANT SS7 Refresh and OPIM for Isometric production.

Problem is even though I have a flange that is 150lb in the model with a 150lb gasket in the Material List on the Iso, the gasket is being put in as a 300lb gasket.

I have checked the piping model and both flanges, valves, bolts and gaskets are 150lb. I do have another valve (control) upstream that is 300lb.

Does anyone have any ideas as to what is causing this?

The incorrect quantity and rating is also appearing on an MTO when I generate a report as well with Report Generator.