Adding a ship to SFC2/OP is considerably different than adding to SFC3. But I've never heard of a situation where the .gf file ever interfered with OP or EAW.
As for me, I don't need CV. I work in MAX5.
Anyway, as I said, quick fix, delete all hardpoints from the model itself. If you want a touch of reality to the model, just rearrange and rename the hardpoints where necessary.