Humber FV1600

[Richard Coutts-Smith]

Couple of Humber questions that I need some help with.
1/ Bottom Pic.
There are two hinged brackets that sit on the lower section of the storage rack (Part no. FV228911) that do not appear in the parts cat., drivers manual or mechanical manuals. They have had a strap riveted to them, now rotted off. The parts book mentions 2 straps 17 1/4in. long for this area. I have always assumed that this strap was used in conjunction with the mystery brackets to either hold down the canvas frame tubes, or for storage of the canvas cover itself. However, the length of the straps would appear to be too short, and the absence of the bracket in the parts book makes me wonder if this part has not been nicked from something else, and I am being led down the garden path. Does anyone know any better?

2/ The seat cushion shown in the parts book pic, (numbered 14,15) has a wooden base that sits over the locker lid, held in place at the rear end with two winged bolts. There are two flat staple brackets between the front and rear locker covers, are these used as a mounting device for the front end of the seat? Has anyone actually seen this setup? I did see the remains of a rotted out seat years ago, but I considered it was in too poor a state at the time to bother taking a photo of. Fool!

Any help gratefully received.
Rich.