My GPz750R1 is leaking oil at the outer edge of both sides of the head where it meets the block. I can remember on the base gasket there was an o-ring around the oil passages to the cams, but can't remember if there was an o-ring at the head gasket, or if it was just the gasket expected to stop oil leaks in the oil passage? Anyway, whatever it is, it's not working
I've re-tensioned the head bolts since I rebuilt the engine about 6months ago. I'm assuming it's at least worth a try to re-tension the bolts again .. or is this just fruitless and I should just replace the headgasket again?