I have a drawing with four very similar assemblies, a tube, with lugs in each end. They are separate assemblies, not configurations. We do not wish these parts to be configurations of the same part. The BOM for each assembly consists of three parts, two identical lugs (one in each end), and a cut length of tube. ALL lugs are identical, all tubes are the same size, just different lengths. Is there a way to combine the BOMs so that there is one item number for lugs, and separate numbers for each tube?