Fitted Leda coilovers back in 1999 never had a problem no mods to car etc. Had then re-sealed a couple of times & modded by Black Art. If you are having probs you either have cheap coillovers or the ones you have are not correctly specced. I except they would be difficult to Spec if you like your car to wollow like a whale in a storm or handle like a bucket of shite & many owners have there cars like that.