I'm kinda struggling to se what you've done in the last couple of photos but the short answer is that there shouldn't be anything inside that little 'U' shaped bracket. It looks like you had it right in your earlier photos
There are two pieces nest together underneath - the bracket that attaches to the pushrod from the pedal and the arm with the 'thing' on the end that goes around the bearing in the middle of the clutch assembly. The slot in the forward side of the arm nests with the pin on the underside of the bracket.
It's one of those situations where if it works,it's right. Note also that there needs to be a lock nut on the pivot of this assembly. There is a nut welded to the frame that the pivot bolt goes into ( from underneath) but it needs a lock nut as well to stop the bolt migrating out with the constant movement that it is subjected to.
Sorry for the long explanation. I'll take photos for you in the morning. I was planning to post some more stuff in the morning as well.
