We are on the propden...so I think we could find somebody with a TM-helmet to teach us!
But I think I also have a good pic of the TM domes front for this question:
It looks like that the stripe is smaller on the front...but its an optical illusion..when you copy a piece from the top all over the stripe you can see that the dome is thicker.So I think they added material on the right side...on the left I´m not so safe,because this could also be a casting defect only on the TM.
But it can also be a reflection of the right side of the dome on my pics before...on this it not like added much material...more like a sanded edge..and on the left side it looks more like grooves along the stripe.