I got my blem Rev 4 BB today, I ended up just putting in a original classic Billet bridge, and fill it with my ADV. (Brown Car) I took one of my Green batteries out of one of my Radius's and have been vaping it, it does have a slightly different taste than in my Rev 3 does, but good. I also found the blem, it is a very small mark in the finish on the bottom, my other BB's have larger marks than this one does. I am happy I finally got one, I will get a picture up soon. 
KAS
KAS