I made a mod. Bought the kit from madvapes. Took me an hour and 20 min to finish. I practiced soldering the night before (without much success). It was THE best! I love it. I have a kr808 connecter that will stay on the 510 for the better part of this mods life. I believe its called a nicostick. I read quite a few of the threads in here before I did it, and it really helped. Thanks so much for all the info. Sometimes a little hard to find, but I couldn't have done it without you. I can't wait to start my next one!