Sorry, I don't check email or get online that often these days. I did take a look at all the pics and will attach a couple here. I'll take a look and probably join the facebook group.
Spring I'm looking at is not really visible unless it falls out, and it does go behind the presser and foot bar. I'll upload the picture of that as well, just look to where the orange marker tip is pointing as that's where it goes.
The spring I'm talking about is in the second image.