[redmodelt]

If at 35 the nut only has to move a small amount to get the cotter pin in, then yes I would turn till it goes in. If you can's see the hole then I sand down the nut and try again. Yes it is bit more work, but as the studs can't be replaced and once the threads are pulled, the rod is junk.

For sanding down the nut; I use 400-600 grit paper on a flat hard surface. Pulling the nut across it for example 3 times, turn 180 and 3 more times then test fit. Repeat as needed, but as you get close reduce the number of strokes across the paper.