hello all, i asunder my b4 rsk legacy today for an oil an filter change when i noticed gearbox oil on the base of the box itself (manual box) ..it wasnt dripping off it but it appeared to be running down the side of the box(drivers side), and along the bottom of the box..i though it may have been leaking from the drivers side drive shaft where it enters the gearbox..i cleaned it all up an will kepp an eye on it? is ther a way to check the garbox oil level and does this sound like a serious issue ?