Just went and looked, and no doubt the bolts are there for the mud scrapers from the limber . I looked up the mud scrapers (near and far) in the manual, and it only refers to the limber....so it's safe to assume the mud scraper was not used on the guns themselves? I note the back plate for the limber is the same as the back plate for the earlier model of hub as also used on the gun (no19mk1 hub).
I also see in the group of part numbers for the scrapers, the numbers for the 4 bolts, nuts and washers. I will be cutting the bolts flush with nuts at the backing plates....that will be four less items to get fouled, or to cut my hands on while reaching in behind the wheels.
I think I can consider this mystery solved. Thanks Rob.
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