I've found out where all that oil was coming from. My Bandit's pulse generator cover was punctured by the engine bars collapsing and it's taken the oil pressure switch with it, stripping the whole thing out, including the thread, which is nice. Now, do I get it repaired or flog my bike for spares or repairs? If anyone wants to make me a sensible offer to do either (repair it for me or buy it) I'm open to offers. Beer tokens available for the person that can get that switch back in!