I'm not familiar with the calipers as fitted to Aeros, but there should be some method to prevent the pins self extracting, be that split pins through the pin, or (in earlier forms) the pins actually being very long split pins.
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly '11 MINI Countryman Cooper D All4 '90 LR 90 SW
