RE: FW 190 Rebuild.
It appears that the ailerons are being driven by 1 servo hooked up to a ball and socket type of attachment. My old instructor had me set my wings up in a similar fashion n my first airplane. Each aileron has a wire that goes to an "L" braket, then is routed to the servo and a solder connection that is attached to the wire between each aileron. When the servo moves the ailerons move oppsite directions.
Sounds complex, but is really not a bad way to connect them up. However if this was my airplane. I would pull the wire out and just place a servo in each wing bay directly to each aileron. With a modern day radio this should be no problem for you.
Hope this helps
Glenn Williams