hi guys for somke reason my brakes are sticking on my 4runner! u can take off in drive and it will hold and not want to go no where then i put it in R and back up and they will pop and unstick and then it works till i make a sudden stop and it dose it again. The brakes seem very touchy as well as soon as i push the brakes they grab fast. We took off both front calipurs today and took them all apart and cleaned the pistions well to make sure and it still dose it so im thinking it might be the backs and if so what would cause them to stick on the drums.