I wish someone would, I was in the SIM last month, flew one recently with a Skorsky test pilot at Coatesville and no-one I've met, or flown with so far can give me an explanation of why the profile is as it is, certainly it is unique in my experience of PC1 and I've been flying the beast for a good while, and PC1 twins an awful lot longer
Lack of performance with an underpowred helicopter