When mine became bad, I had a friend in the Navy make up Monel pins which he knurled for me. He was head of Cockatoo Island workshop so had the apprentices do it.
AFAIR and this is 18 or so years ago, the problem is that the pins are 6MM and the next bolt size is 8MM which is really too big and leaves little meat. So my friend made the pins 7MM.
So maybe have some 8MM bolts turned down to 7MM and Knurled.
I now do not remember the exact diameters but the size gap is the problem.
Regards Philip A


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