Thatakid75

Just got a mini 8ight and replaced the radio and reliever with the spectrum DX4C. I am having problems with my steering servo twitching when I pick up my car and at full throttle. When I stop it turns hard right or left. The stock servo is still in car just waiting on putting in the Savox low profile servo in. ANY IDEAS WHAT THIS MAYBE OR WHAT I NEED TO DO TO FIX THE PROBLEM.