What did you use for new pins? Would it not be easier to tap the top and
use an AN bolt instead of a pin? I would not object to a hole at the top.

What does this "Piper conversion kit" do?

Thanks,
Mike
I have a lathe, so I whittled out a couple of fancy looking aircraft quality
aluminum bushings (dimensions long gone from memmory) to adapt the smaller
shafts and repinned them. The hole at the top of the yoke was filled with
plastic aluminum from a tube and sanded to match the contour. My powder
coater assured me that the plastic aluminum filler would survive high temps
of powder coating, there is only a slight, almost imperceptible dimple
caused by shrinkage showing through the powder coat.

Being an A&P, I simply made a log book entry using the Piper conversion kit
number (gasp) since I was pretty sure nobody had ever seen the real Piper
conversion yokes and so far nobody has said a word about it.