The cam followers have score marks, but the cam may clean up. I doubt the oil pressure is low John, S.R.M. Pump and PRV, neither of which have covered more than 15-20,000 miles. A good sign is very clean magnets in the sump and oiltank. I think I may have run to long into winter with straight 40's, coupled with the rocker feed banjos only having the smaller holes in them. (I notice S.R.M no longer sell them, and only the larger holed variety.) The bike is high mileage now, so I'd expect some wear and tear.
I'll be checking oilways for blockages of some kind though. I'm having trouble splitting the cases though, and yes, I have taken the internal nut off!😃
Any suggestion on that please?