I just got done putting my Deere 4310 away from plowing. I noticed on the front left wheel that there some green fluid on the inside of the wheel. I would assume that it is leaking hub fluid. Anybody know to rememdy this or is it off to the dealer? 377 hard hours and this is my first "real" problem. Other than this the parking brake light stays on. I have to say that I'm very happy with this tractor.