I have the '01 Contessa San Marco 38 one slide. In my travels I lost A rear brake Pad! How on Earth does a pad fall out ? 64,000 miles .The caliper pistons tore up the Rotor real bad as you could imagine. I was sent parts but not - the Axel seal so I replaced the caliper and pads to get down the road. All I know is that I have a Rockwell axel and Bendix 4150844 dual piston caliper.The rotor that dosent work is short one - Centric #120.83014 .The deep one is the one I need. Anybody have some ideas on what parts #s are needed to get me back togather? 585-509-2577