Ok Tyler I just had a look at one I just pulled from a side pull full crank with a G4 carby, is it the correct position? I have no idea but I will do my best to describe it for you. .
Looking at it the boomerang is towards the bottom of the cowl,facing away from the head end with the top edge of the boomerang slightly above being level with the top of the cowl. Sure it makes sense to me but not sure if it makes sense to you. Probably a bit too difficult to take a pic because it is all black inside. My son is over from NZ on Thursday so he will be able to put up a pic somehow if you need it.