I just got a used Provari in the mail and popped in my fully charged Panasonic CGR18650CH batteries and nothing is happening. I am really wondering what the issue could be. Does anyone have any insight? The only thing I can think of is the connection is a little dirty. I tried cleaning it with iso but it doesn't seem to get all of whatever is on there off. Should I try a fiberglass tipped pen if I can get a hold of one? Im kinda bummed and any/all help would be great.