I just purchased my first Banshee and love it, but I have an oil problem. The oil leaks out from the overflow tube. I thought at first that I had overfilled the case with too much oil, but after changing the oil again, I made sure I filled it to the correct oil level. When I change the oil, I let the engine run to get the oil hot so it will all flow out so I know I am not overflowing it. My local dealer said that it sounds like a "main seal" I have no idea what is going on. If anyone can help me diagnose the problem, I would really appreciate it.