I believe this is a 28" in. model, with a 102 sq. in. headsize. I am specifically curious as to what the unstrung weight in grams is (300, 310, 320, etc.), what the stringing pattern is (18x20, 16x19, etc.), whether Head was using their standard "rectangular" grip mold on this frame, and lastly how firm the flex is. Thanks in advance for any info.