OPM CE - Report by Component OD, Not Just Pipe

New to using reports and looking to develop the 'BOM By Line Number'.

Issue we have is that components connected to a reducing tee are reporting back to the main pipe size rather than the branch size.

I'd like to get rid of all size references and just report by the OD of each component.

Is there an easy way to do this or a good tutorial on how it can be done?

Many thanks,