Fujinon Seiko Shutter Repair 90mm F8

Hi,

I was messing around with my Fujinon Seiko shutter 90mm f8 (third image). I put it on self timer accidentally and switched it to X while firing. Then, I tried a 1 sec fire and it fired once (I could hear there was something wrong) then after cocking it didn't fire at all I think. I opened up the shutter and am trying to fix it myself. I have pictures attached. I don't know where the spring goes on then shutter cock ring (first pictures. And there's another piece I'm not sure where it goes (second picture). Any help is appreciated.

For the first, there is a very similar teardown at . I used it to fix my Seiko shutter. The second item is your loose preview lever - you can probably live without it if you have a locking cable release.