Update
Good news. Got the plastigauge this morning. Clearance is 0.051mm at all locations. well below the service limit of 0.13
Before measuring I found just the right size socket and cut strips of sand paper. Soaked it with wd-40 and with light pressure gently rotated the socket as I fed the paper thru. I did the cam ladder and head first counter clockwise with 1000 grit. Then clockwise with 1000 again, 1500, 2000 and 3000 grit. That got rid of the dirt/specks. The lines are still there, I wasn't looking for perfection just take most of the dirt off and that worked well.