Shift arm retainer clips

the retainer clips, and washers keep constant pressure on the rods which = no rattle

Oh, I agree, I was just being a SA. I have seen nails used on 4-speed shift linkages, though.

On removing the OEM clips, I don't push on the part of the pin that goes through the hole. Instead, I insert a narrow screwdriver behind the largest round part and past the side of the shift lever, then just pry. Comes right off.