seem to have solved the poblem , lowered front tire pressure to 25 lbs upped rear to 32 and then just for a guess i clamped 2 50 lb weigts to the front of the bar closest to where it hooks to the car and bingo not a problem at all.
the front of the car is a lot lighter than i think and since i have shortended it i have really got a lot more weigth on the rear of the car.
dont really want to have that extra weight on the bar permanently but think it might be a good place to put a easy to remove spare tire for the car