Pix 1 does show the spring but it is very hard to see. The three gears are the delay timing gears and pallet. At the red arrow in picture 1 is the center of the spring, the long end goes to the left between the case and delay gear cover post, the short end goes to the right and rests against the case. The bend in the long end at the center faces the case.

The cover over the shutter blades will need to be removed to realign the shutter blades. The shutter blades will only come out of position if they or their pivot pin breaks or the retaining plate comes loose.

I can repair the shutter provided I receive it in its original assembled state.