I have a knock from the front right, and the front end feels a bit lumpy. I have replaced the anti-roll bar links once, upper arms. I think it may the lower arms, and/or the anti-roll bar bushes. I have spoken to Alfa and they say the bushes (where the bar is joined to the chasis) cannot be replaced, and it needs a new anti-roll bar. Has anyone replaced the bushes, and if so, what did u replace em with (Powerflex?). Also has anyone had the same problem with a knock from front right and is it most likely to be the lower arms?