Crikey what a pain in the arse, had a leaky rocker cover gasket on the vmax, finally got to sorting it today after waiting for weeeeeeks for the damn thing to show up.
What a thing to fit, officially you take off the seat, airbox, carbs, fuel pump, drain coolant, header tank......continue till dead.
So like any good home mechanic I cheated. If you whip the seat off (4 bolts) you can get at everything but you have to change the gasket without taking the cover off, just lifting it maybe 15mm. Its fiddly, and a few strategic blobs of yamabond (or red hylomar) to make it behave. But it is possible if your careful and patient.
All done in the time it would have took just to get to the damn thing. Not keen on repeating it though, the gasket looks like its dead easy to snap.