Initially I had only planned on a polish but once the crankshaft was inspected my engine builder suggested regrinding it and has gone ahead with it. it was only until earlier this morning that i started reading about the reliability concerns regarding the procedure.
would re- nitriding diminish those concerns as i suspect he has already had it reground(will find out tomorrow)...well i guess my options are re- nitriding if it would help or setting the crankshaft aside and searching for another