It looks like the part 29 the spring hooks to near the idler is on wrong. It should NOT be between part 24 and idler, BUT on TOP of part 24. spring hook UP NOT down as in your pictures (which are upside down) in you post of three pictures
It also looks like part 29 has a "bump" stamped at the end (opposite the spring hooks to) that mates to the notch on part 24 to prevent it from pivoting on the spindle bolt.