Balance Problems...Vibration......

Had you driven the car with the stall in it before?,I had a stall that was out of balance and it had many of the same symptoms,if you power brake it slightly it would really vibrate the steering wheel.Its just a thought,also my brother had a 360 built one time and it was balanced incorrectly and it vibrated as well but Im not sure how severe it was-could be many things but hopefully its simple.