I remember Honda doing away with those grease fittings, so maybe the pivot does not need lube in normal use? If so, other than disassembly, can it be loosened and some sort of lube (chain lube that turns to grease?) be squirted into the pivot points?
I guess I'd put a lot of grease in that cavity if one was drilled. My 550s was in the middle. I had read one time that its best to loosen the NUT on the bolt so the grease could flow in. I wonder if any would get to the friction parts by loosening the nut and spraying some chain lube that turns greasy?