I got a bit carried away, and before I knew it the thing was torn down to the crankcase!  I figured while I had the thing apart I might was well get to the 94mm Wiseco flat top piston work!

The rockers look good.

The combustion chamber and valves look good.  I had polished the valves and head to a shiny finish when I built this engine......you can't tell now that is is covered with carbon.

There are a few small scrapes on the inlet side of the piston - it is amazing how deep the photo makes them look.  They are actually very light.

The top of the piston has some carbon on the top edge - this is the only place that occurs.  It likely has something to do with the top ring gap being in that area.

The left side of the piston.

The exhaust side of the cylinder bore.

This is the side where the piston has some scratches.  The scratches have no depth to them - more of a scuff.

I am not sure what to say about the leak - I could not really tell why it had suddenly began weeping oil out the hole that passes from the exhaust port to the opening back on the right side of the carb inlet.  I had thought it might be the right rear cylinder head stud - but that was dry up at the nut and copper washer....and the stud was dry when I removed it.

The stock multi-ply head gasket had been weeping oil all through the layers, and the front center cylinder nut had a lot of oil on it when it was removed.  I will check the head to see if it has an excessive amount of warping - and also check that center front head stud to see if it is pulling out.  The leak did not appear to be up front - it was at the right rear and in the fins above the head gasket.....the Versy head plug appeared to be dry and clean underneath and I don;t believe that was the source of the leak.

Tomorrow I will begin cleaning things up and get ready to start installing the 94mm Flat Top piston.  I have coated the top with Cerakote thermal barrier.....no idea if it has any real benefit but is supposed to help reduce the heat transfer to the piston.

Dave, Check your old pistons oil holes front and back. See if they are starting to gunk up, or maybe you don`t have enough miles on it yet. Just wondering how soon that starts. (or maybe it was my seldom over 4k riding style)