Often Hornby etc. make a coach model available with several different numbers (e.g. the coronation class ones are 1069/1070/1071). I am fairly new to this and I am not sure if all the coached making up one train should have the same number or should they vary. If the former is true then a problem arises as the brake coaches appear to be numbered 5792 or 6062. Your advice is greatly appreciated.
Alexander Lamaison.