RE: setting the degree of engine thrust question
2 degrees of right thrust.
However that is not the casue of the snap.
It may be, too much deflection, too much surface area, too fast, too far back balance, your flying, overall weight it's a Funtana and/or several other factors.
Easiest fix, reduce your deflection of the elevator on low rate. Only use the high rate at zero airspeed.