I have a fiesta rs turbo and the offside front rubs when you go over bumps,the car is fairly low but it only happens on one side it also makes a lot of creeking noises when on lock i think i may have a broken spring or a knackered shock,i'am told the shocks and springs are the black type spaxs, if the spring is knackered can i use any springs or should they be the same,i think it is lowered by 35mm from the standard rs turbo springs,cliff