Brilliant stuff James

That clarifies one matter in that the racks have different levers (must get used to that term rather than calling them sway arms as I was) front and rear as per images 3 and 4 above and not the same both ends as I’d assumed based on one of our complete original racks being so configured.

Having longer levers at the front makes sense given the taper of the bomb nose.

That still leaves a wee query in that the adjusting screws come in two different lengths. The longer one is as per the manual page with the knurled knob at the end away from the bulb whereas the shorter has it fixed at that end. Here’s one of the arms I’ve just cleaned up and it in fact shows a different type of quick release pin arrangement but as it’s more fiddly than the manual one it’s probably been superseded by that in the manual. We’ve got both types of these. Perhaps the different screw lengths are again a later simplification.

Thanks again I’ll trawl about and see if the AP is online anywhere as a download.