I have a Scag 36" Walk Behind that I bought a few months ago. Its my first walk behind and its been great so far. Yesterday the gasket at the bottom of the fuel tank started leaking badly and the transmission was soaked in gas by the time I got the tank off. Today the transmission was leaking oil/grease by the shaft bad enough to have a good bit on the frame. Showed it to a mechanic and he said it should be fine, but I dunno has me worried. Was it caused, by the gas, or is my transmission going out? I dont know, any advice would be appreciated.