Need some help please. Just changed my 335 for the 135 & is superb. But the brakes are no where as sharp on the 135 & infact I experienced serious fade the other night coming up to a roundabout at around 130 !! So, do we know of any factory upgrades, or are they generally a bit wooly in which case your guidance on what to do would be much appreciated. ( The car has done 25k miles only & all measurements correct according to dealer ie disc/pad thicknness.