This afternoon I found a sealed Kamui chalk that my wife had bought me. I said what the hell, I'll give it another try. When I opened it I saw it was a much lighter blue than the other new one I threw in the garbage. This one doesn't stick to the CB at all yet. Don't know what's up with that. It does cover nice too. Anyone have any ideas why it plays so different leaving it outside sealed for a year? JT