Looking at the LFL photos....the V2's nipple is part of the entire emitter head, right? It has no set-screw on the side of the emitter (only 2 in the nipple).
The Shared stunt does. Something was inserted where the nipple would be, and set with a grub screw.

If the Nipple was ground off, why did it leave a large hole?

Was the Nipple a separate unit, inserted into the emitter? You can still see the rod holding the emitter on. Maybe glued in place. Maybe this set screw is for the rod?
I thought this and the V2 were identical. If you chop the nipple off the V2, you'd still have a hole the size of the rod. Not this.
The Shared stunt does. Something was inserted where the nipple would be, and set with a grub screw.

If the Nipple was ground off, why did it leave a large hole?

Was the Nipple a separate unit, inserted into the emitter? You can still see the rod holding the emitter on. Maybe glued in place. Maybe this set screw is for the rod?
I thought this and the V2 were identical. If you chop the nipple off the V2, you'd still have a hole the size of the rod. Not this.
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