you have to grease the pins to slide - same stuff you use on car brakes -- the only brake pads that works are the DS-325878 -- your disc is stainless steel and pads like organic or ceramic only slow the bike down-- I have had to make shims to fit behind my pads till I get .020 clearance -- the puck in the caliper retracts back into the housing to far and when you step on the brake your pedal goes way down before it stops - just my experience -- good luck -- your also gonna get a lot of negative crap from the 2 who think they run this show and their word is god..