HELP! Flywheel 'step' height - Look here!

[dAYTONA]

Hi Guys,

i gave my flywheel to be machined, but the idiots machined only the part which gets in contact with the clutch ..... rather than taking off the same amount in both areas

the guy who did it was long gone when i arrived to pick it up, and they dont know how much he 'took off' so

has ANYONE got a flywheel out of their car???

I need the measurement of the 'step' - where the pressure plate bolts on and the surface which goes into contact with the clutch.

So if you can help me out, before 18:00 it would be very good...

EDIT:
i have circled in red what I'm talking about...i need the measurement of that little width difference