C4.1 gearbox brace?

[ejw]

Anyone noticed screw to secure turnbuckle brace between battery brace and gearbox at gear box end was missing from their kit or have I just missed something here, everything else done but nothing that looks likely for this left over except 2nd of 2 silver bits (one used at battery brace end) but this is never getting in the gap at gearbox end anyway even if I had an appropriate screw, which I haven't! Agggghhh!

Any thoughts?