Well...my OEM discs is not that good anymore.
Brembo's runs much more freely....might be because OEM is not fully floating.
So I've replaced OEM with new Brembo HP discs and Z04 pads .... now they run freely.
I've also removed the dust seal in the calipers...pistons moves great now.
The Brembo HP disc is 300gram more heavy then stock disc (each)
Potere - I hope your new Brembo's will do the trick :-)