You're right, there are some extra rear arm braces for adjusting rear toe in and anti-squat that I forgot about. I will include those. I do recall some extra screws and some plastic washers. I can look through the manual and through my parts bins and try to include the extras making it comparable to what I recall as being left over. I can't remember if I kept the part to fit a 6 cell pack.
I can also sell you a set of new in package white rims for $10. The body and wing are also NIP.