While I was working out how to replace the missing bits from the rear guar, I had my taste Mick McCarthy, proprietor of MJM Motor cycle Seats create a new seat for the FLSS, giving me a couple of inches more seat length, some fancy stitching and a reasonable backrest and pillion perch,
Fortunately I remembered that I had the necessary security bits tucked away and soon had the luggage rack sissy bar and new seat firmly attached.