what's the difference? I'm having trouble getting a burnt taste with the atty's I received with my Joye 510 starter kit from ecigsupply.com. Given that I'm operating it properly what could cause this? I read in another thread that this was not an uncommon problem, that there may be manufacturing issues as of late. So do the Titan 510 atty's have the same problems? how are the 510 atty's produced by SLB/JSB?