Not sure if you've found your leak yet... try this. The tube from the radiator to the overflow had become a little cracked at the base of the overflow. It was cracked enough to have a bad seal/connection and would leak several drops as the engine cooled. It dripped down the wheel well and, well, all over. Some got on the block (which is rather alarming thinking you have a bad head gasket, etc) and would burn after you started again. If you find any on the wheel well, that's your culprit. Just drain your overflow, cut back enough of the hose to get a good seal and reattach. I threw a zip tie on there just to be safe.