The picture shows the magic. The servo wire for the upper wing were run through the bottom wing out to the strut. then a small hole in the top of the wing where the strut goes then up thru the strut to the top wing. The strut is hollow so just a little drilling and you're into the strut center. I use chokes on the long servo leads to cut down on any interference. My transmitter is a JR 10X with a Jr 955 receiver and a Duralite 6v 3500 Ma setup for the batteries. I used all HiTec digital servos. I have seen one other Pitts flown and it had a DA 50 and did great.
If you're careful setting up the controls , you'll be amazed at how easy this bird flies.
Galen