Is there a way to add a row to a BOM?   See attached smg, view 16, item 47.  I'd like to add a row below item 47 and fill in replacement seal kit information for the motor.  It would be great if the seal kit info would stay right next to item 47, too.  The seal kit is not modeled.

What other ways do you add or reference replacement part information?  Do you just add note and attach it to the motor or cylinder?

-Micah