[Mobhack]

The service dates do differ.

Probably something that could have been covered by an a/b combined model as they are identical in game terms. However now they are in the database, deleting one or other would need a complete check of all existing scenarios to see if one or the other is used, as the removal of the thing may bork these.

About the only thing I could think of doing to these (if anything), is to make the B model an X0 radio code (common) and leave the A model with an X1 (less common) radio code.

Cheers
Andy