I just switched from using a 302 atty for the last few months back to my old 510 atties. The 510 is giving me terrible heartburn and the vapor pretty much burns my mouth the vapor is so Hot. I loved almost everything about my 302 the taste, coolness and draw but they leak bad and waste so much of my juice I just went through 40ml's this wek trying to vape lost most of it to leaking. I need to know what ohm or resistance (whatever) 510 atty and brand to use to get the coolest vapor. I am using standard resistance dse now from valuevapor and I used to love it until lately after having a cooler vape this is just not satisfying me and the heartburn and burnt feeling mouth is not helping any. I tried a 510 ce2 way too hot ugh I have gone thru all my atties and they all suck. help please....