I tried posting the AF amp circuit here but the forum software reduces the image too much so it is unreadable.
You can download the schematic from RM as a guest, just click on the small image on the right then on the large image on the left, then fill in your details. you will need to download each page separately. the limit is 3 per day I think.
Mike
ps
here it is as a pdf
209 af.pdf