Rebuilding a newly aquired CS 6-1 after recovering it from an orange grove in Greece where it has been quietly rusting for about 40 years! It actuallly worked!! What is the bump clearance or deck height as some call it? My guess is that it should be set up with gaskets between cylinder and crank case so the piston is exacly level with the top of the cylinder, leaving the head gasket to provide the clearance. But I don't want to guess - hence this question