Incineator trooper forarm question

[Deublein[501st]]

Question.

In the CRL for the incinerator trooper about the forearm armor.

 

The picture showing 3 red lines. 1 on the front, 1 in the back and 1 in the middle of front and back, but the CRL text sayes "Special unit details in red shall be present in the form of two vertical stripes. One in the front and one in the back". 

Now i have surfed a lot of pictures and some have 2 and others have 3 red vertical stripes.
Which is the right answer?

 

[Thumpy~[501st]]

If you can demonstrate to the detachment officers and/or GML with photo sources ("rule of 3" I guess applies) of a variation of the stripes, you should be good to go.  CRL would be appropriately amended by the detachment I would think.