I bought a pair of new cam locks for a 1996 Spider 2.0 but on trying to fit them to the 3rd keep on each cam they seem to be the wrong profile, the lobe bottoms before the keep nears the head. The numbers are 1825042-1 and 1825042-2, the card in the box says 1825042000, Alfa Romeo 2.0 TS BZ and came in a Alfa box which had already been opened. The number seem to match locks for a 1400/1600 but Id like to be sure. Can anyone confirm they are the wrong ones please?