Bought an eGo from a Cdn online supplier (named a distributor on joyetech site) but the cig, box & paper insert do not mention joyetech, only eGo. Seller advised in writing that it was authentic joyetech. Seller advised manufacturer changed branding 4-6 months ago and this is an older model with no branding. Thoughts??? Oh, within 30 min of first charge, both battery & charger got so pretty hot so I unplugged - scary!! Thanks.