Originally Posted by brad
so basicly , the edges of the piston ideally should be kept as close to standard height as poss and the bowl machined down as evenly as poss across the width of the original bowl

or am i gettin confuddled ?
Yes, exactly that Brad, unless you have good reason for lowering the squish area, such as higher expansion piston materials or use of a centralised gudgeon pin where you had an offset one before (Piston rocks at TDC in this configuration

)