I hope this is the right section for this... Anyways my TI plate has developed a nice dirty coating of resin all across the top, and even a weird chunk of it is on the underside. Also some white stuff appears on the plate at times and I have no idea what that is. Am I supposed to clean it? How so? And do all TI plates get this dirty? I have been using it daily for about a month or so numerous times a day.