The original poster mentioned something about a couple wing nuts. These might have been for securing the seat against popping forward. I've seen some little 1/4" pins with a check-ball on the side that would work! Think it was Home Depot in their little specialty hardware section.
It's really amazing how much more comfortable the seat is with the slight tilt back. If you don't put the little bend right up close to the bolts (and go straight down) you can actually feel a little additional room back from the steering wheel.