I think I just wasted $13 unless you's guy's can help. I bought the little round helmet mirror Blackburn. I can't get a good view out of it. I end up fiddling with it when I should be watching traffic. Bike shop is too far away to return it. I have a Giro transfer helmet and have the sticky part over and above to the left of my left eye on the helmet. Where do I mount this thing?