I recently cast my eye over a 3 meeting old V3 the slop in the propshafts was what you would expect after a whole season.
I personally don't like the drive pins they are too short below flush any tollerance and they get dragged onto the cup. They should protrude slightly. I make mine out of piano wire grind the flat spot in them the same but leave them a little long them dremel them almost flush if the holes.are a bit worn it stops them from pulling in tje slight burr acts like a rivet too.
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