RE: Head speed & pitching up
6 degrees, maybe 7 of cyclic. The pitch on the main blades is what matters. Set the pitch to zero degrees (in a 3d curve this should be right at mid stick). Put the blades out fore and aft. Stick a pitch gauge on the blade and verify 0 degrees then give full right or left cyclic and hold it there and measure the pitch of the blade. If its more than 6 or 7 at the most degrees, lower the atv's equally till you get it there. Make sure the swash plate is level when you do this, most of the time they are going to be trimmed a bit to the right to compensate for translating tendency from the tail rotor pushing sideways.
Turn the blades to they are straight out left and right and do the same thing to the elevator. Dont worry about how many degrees the paddles themselves deflect.