| Definitely not the clutch pushrod - that was the first place I looked!
I have done all the usual troubleshooting stuff involving talcum powder etc - no signs from cylinder base/head, oil pressure switch, oil filter, oil cooler hose joints etc etc - I am 99% sure it's coming from the casing itself!
Hopefully will get a spin on the bike this weekend to see if my temporary repair has plugged it up (I have used some Oilite Stick - it's stuff we use in the airline business to plug up running fuel leaks on our Jumbo's...).
Does anybody know if the clutch cases on 2 and 4 valve motors are the same?
RX | 
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