I notice the pad are not sliding on the caliper retaining clip while i am installing a set a new pad. then i read some post on the internet and my freidns also told me, just file or grind some materials on the ear to get more space between pad and caliper support bracket. however i am wondering if this is the right way to do, as i imaging grinding also remove paint and may result in more rusting from the ear area of pad, causing pad to stuck even more in future.... but then what do i do when the ear is just a little too big to slide easily? thanks.