RE: Vertical down line snaps
Definately use less elevator and also reduce the aileron input. You will need to try different combinations to get it worked out. As I understand the terms "Snap" and "Flick" are the same thing. "Snap" is used in the states and "Flick" is used in Great Britian. Just as "wheel pants" and "spats" are used for the same item covering the wheels.
Hope this helps.
EXCAP232