[MizunoJoe]

3. yes I have seen the data showing forward bend at impact- even the pros. BUT HK has said (can't find the quote now but it is on the forum) that the pro's loose lag before impact.

hb

Yes, if the club head outruns the shaft before impact, club head lag is lost. That's why you try to match the shaft to your swing so that the club head is in line with the shaft at impact. But even with a forward bending shaft, there is still accumulator and pivot lag to prevent the loss of pp#3 lag pressure.