I have an origional CS 6/1 and the valves are .0175 below the surface, the book says .01 max !!!! Is it possible to take this much off and recut the seats or is this to much ?
You'd be best off either getting new valves or getting the existing ones built up on the seat and re-grinding. I doubt that the difference you quote would be a big problem in normal running.
I think also you may be able to get seats fitted if you know a good engine repair shop that can supply basic seats and fit them.
Don't go taking too much off the head unless absolutely necessary.
Peter