I don't know the data for the 2 S cam. I tried to look for the instructions Mike Hemmings sent me for the PW3 cam but no success as yet.
Hence my question. Does your hemmings cam sheet give the inlet lift at TDC measured from the pushrod on the cam or at the inlet valve itself. There is an approximate 13% increase in lift at the valve due to the rocker ratio. 15 years plus down the road I can't remember if he specifies at the valve or off the cam.
You said above
"At TDC for a 2S cam inlet valve lift should measure .157"
Dots misaligned as found (timing to intermediate) .178""
How many degrees is this estimating from the lift diagramme you made. It does look pretty advanced.
For a street bike I would install the cam exactly as Hemmings says for inlet lift at TDC. With the lift curve you have measured you can estimate what a 5 degree advance or retard of the cam will give you in terms of lift.
For a race bike I might try 5 degree crankshaft advance for the cam. You can definitely try remeshing the gears and chain to do this. Or else I understand RGM sell cam sprockets with offset keyways which seems a way better way of adjusting it than filing keys. Don't use a vernier for other than short term testing. They are not reliable longterm.
I have more info in my files but pretty busy at present and it will take time to dig it all out sorry.
