I actually consider myself pretty good at feeling the puff and driving downwind. Even if I do turn down, have both bows planted nicely prior to the puff, I still dig into the chop and I still SLOW down. If I am on the wire I go OVER the chop and this doesn't happen. Maybe that is just the way the blade is. An extra 125+lbs and another foot on the 17 might make the 17 not do this as much downwind.
I am still a little lost as to what you are saying.