Some Vampire 5 wing leading edges were formed from a single sheet (DH?) but others showed a butt joint (EE?), and by the mid-50s some airframes had gained one of each. No problem - but the butt-joint wing did always seem to drop first on a HSR.
There also was at least one oddity doing the rounds, which had a Mk9 wing on one side with its Godfrey cold-air unit intake blanked off, but again it didn't seem to make much difference.