I rode Palomar this morning and I met a rider with the same 05' Ti as my own. He looked at my tank and looked back at his. The top on his tank was sunk-in, it looks like someone sat on it for a whole month. At first I thought he was a stunter using his tank as a seat. It was weird he told me that it happened slowly, the tank just kept on sinking after he took off the emissions. How did this happen?