CNC-Dude, if I read your post right, both the 292 and 261 use the same "type" of pin retention, so they should be compatible?
Well, they're similar in that the wrist pin doesn't move in the S/E of the rod. The Stovebolt uses a "pinch bolt" that tightens up and closes the S/E of the rod around the wrist pin, while the 250/292 style rods have an interference fit in the S/E of the rod.