My passenger side front caliber doesn't slide in all the way because of this so towards the end of the life of the pads they start to wear uneven. I have a lifetime warranty on my pads from Vatozone so I don't really care. I am getting rid of my 11 Sonata next summer after I move to Austin anyways so I really don't care. They don't make any noises so I doubt it is the pin slide and is probably the pads.