Typical Nick fix. The LaFranconi Competizione silencers (hah!) on my Guzzi 750s were looking shoddy, with rusted seams, a few small dents and surface rust.
A quick go-over with a wire brush, a quick spray with 'high heat' rust paint and they are as good as new.
Who needs "Genuine Italian Silentium shark gill mufflers" at $601US a pop? - authenticity be damned.