Christopher, I'll give the JC juice a try sometime. Just an update, I decided to go to emergency last night and get checked out. They did an EKG and chest x-ray just to be safe and all was "pristine". They really couldn't come up with an explanation except that the nicotine level may be too high, not buying that though. I still think I was drawing too hard and too frequently, probably in combination with stress which may have caused this. The chest pains are gone now so all is well. Just got my 901b starter kit in and have tried it out. The draw on this is similar to the supermini I was using so I'll probably pick up a dura or minifogger when I can afford it.
Roola, thanks for your suggestions, I've tried the cleaning similar to you but I didn't notice much difference. I've got another atomizer coming any day now but I don't think I'll even bother trying, will just pickup a lighter drawing e-cig. Already spent close to $300 just experimenting so far, hopefully my last choice will suit me
Cheers