03 300 Problems

[Ryan#87]

I got a GG 300 Wild Hp, i know it is the quad version but i am presuming it is just the EC300 engine in there.
anyway to my problem there is a pipe that runs from above the Right hand powevalve cover that i think is a breather pipe? When the engine is ran hard it leaks oil/fuel, when i say leak it does not flow out but it drips slowly down maybye some mixture is expected but not this much as your leg would be covered in it quite fast.

I am only a apprentice mechanic at the moment and time and not completely sure on what the problem could be. crankshaft seal maybye?

any help would be much appreciated.