Hi, i recently bought a wr400 project fitted with a 450 engine and plastics. Its nearly complete but there is one oil pipe left and i cant figure out where it goes! It goes from the top left side of the oil reservoir built into the frame - but i am unsure where it should go and i am missing the pipe i need! Perhaps its just a breather/overflow or is no longer needed as its got a 450 engine? Any information would be greatly appreciated or if someone could check their bike it would be great! Many thanks, Daniel.