I think the biggest single factor for me…and I am not suggesting I have everything working perfectly, is the the release of the air..the slingshot. When I focus on it more than anything else, everything seems to work better…there is less instinct to push..it is almost hard to push when the slingshot is implied. The aperture corners seem to arrive in the right position…the accuracy on virtually any note within my current range is substantially better….it keeps me encouraged…Jim