I just got a V4L manual passthrough. I plug it into a wall plug that has a 2 usb ports, it's one I bought awhile back for my son to use for something, I think an MP3 player. It works well, QUITE well, and was wondering, because it seems to be a stronger voltage than my regular non-passthrough kr808s, do I need to use LR cartomizers on it to prevent burning my cartos? Or should I be able to use my regular SR cartos? TIA