to make a long story short whenever i downshift, in any gear, the whole car starts jumping and making lots of noise. i can do this from 5th to 4th at 50 mph and the car will actually smoke the tires, both of them until it starts to stall. i think i fuggered something at the road course but don't know. everything looks straight and the control arms are steeda adjustable lower and fixed upper and they are brand new. someone said they might be bent but they were put on to try to stop the jumping around.