I managed to make a little more progress recently.
Starting off with these guys
I spent a while filing away the extra material off the bellcranks rather than just cutting it off, and then I sanded the edges too, it nearly looks like the pieces were actually made that way to start with
Then assembled all the bits, I forgot how tight the servo saver was!
You can probably see the bellcranks are not sitting parallel because someone forgot to shorten the two rod ends before assembly, I promptly fixed that later on.