RGS Headers

Have noticed something interesting or odd on the RGS headers..
The right hand (when looking forward) header is shorter than the other two. The left and centre being in line.
The three headers have part numbers on them and looking at the parts book the numbers match.
Left = 63-101-058, Centre = 63-101-059, Right = 63-101-057.

Odd but as the headers and collector were left off for many years and used by some one else on another bike for a while, I am wondering if the left hand one has been butchered without my knowing.

Any ideas?
 
The left/centre headers are closer together than the right/centre headers, due to the cam chain running up between the centre/right cylinders. Also accounts for the kink in the lefthand frame down tube.
 
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