ok, its gotten a bit dark so i will continue the work tomorrow.
1 problem, i have snapped the compression ring before taking a photo (measured and was no good so i snapped it so i can use it to clean with it). the gap was <0.015 though.
the piston size is 59.95mm so i guess its within hondas service limits as well.
i have never really lapped valves (i honestly was not thinking of doing it, just changing rings and off i go) but i guess if its better i do it now then i might as well learn on this old beast).