RE: Preflight Check
After any crash, you need to thoroughly inspect the entire plane. You're lucky you caught the bad servo. Now you need to inspect all the other servos for frayed or stripped wires, stripped gears. Carefully inspect the tail section for any cracks or flexibility that might have developed in the horizontal or vertical stabilizers. Check around your landing gear for any cracks in the fuselage.
I repaired a Nexstar last year that only had visible damage to the nose section. Since I was recovering it anyway, when I stripped off the old covering, I discovered a cracked horizontal stab.
Good Luck!
Brad