On my - well worn - valve spring cover I suspect that something was attached there, perhaps a repair tag ? The screws are about 2.5" apart.
Are repros available?

email (option): viaconsu [at] planet'dot'nl

This is the cover that was on my machine...FYI.

Cheers,

JDE

email (option): teladelujo@ msn.com

Thanks John, that must be it! Is anybody make repros?

email (option): viaconsu [at] planet'dot'nl

Not sure if this is it: But used in same location with four instead of two screws:
http://www.cornucopia-enterprises.de/spares-bsa.html

email (option): unpob@yahoo.com