thanks for the reply! I'm waiting for the seller to send me a pic of the bottom of the unit to confirm the serial number. If the serial turns out authentic (i'm pretty sure it is), I think I'll buy it!!! BTW, the power adapter is ENG as yours. My new concern now is the whole "dirty airpath" deal, with the air clearly going through the PCB before reaching the heating element. I understand the PCB is not incontact with the heating element and that the PCB is made with quality components, but if for some reason the PCB does heat up, I'm sure I don't want to inhale whatever heats off the PCB. Good thing i've seen on recent towers/extreme q's is that the PCB is red (red supposedly is lead free, green pcb has lead). Maybe people reporting gassing of these units were ones with green pcb's? Are there any sources that confirm the PCB does not heat up or not significantly? BTW, I just realized I'm being sold a V-Tower, not an Extreme-Q. So I'm not sure if my post should be moved over to the V-Tower sub.