Bizarre phenomenon happening! Trying to use camera flash w/ Optocouplers & SCR

OK, I made an image to demonstrate. This is only a couple of the many things I tried the past 20-30 hours. And only a couple of the bizarre phenomenon I've been experiencing.

I'm willing to change components if necessary, although all my research indicated these should work. Can anyone explain why that bizarre phenomenon is happening, or explain a way to make this work (either with the components I have or different ones)?

Thanks.