Hmmm... I have both those rackets with that string. But I just use a free tuner app to check the dominant frequency.
Reason i ask is becos i string both racquet by the same stringer n on the same ecp machine at 27/29lb. Bt when i use raquettune to check, the reading on ppro was 31.5lb n on the xp70 30.5lb. I thot it would give me a reading fm 27 to 29 lb n not above 30lb. So i think mayb i had set the wrong paraments for the frame n string dia n string factor. Any advice?