Ron,
I am one(?!) day away from finishing a generic GA twin TQ. I will post some pics over the weekend. It is running on 2 hacked joystick boards, and so far tests have been satisfactory. I will share the plans with everybody who needs it. I have spent ± 500-00 ZA Rand(± US $70) on it. You can cut and modify it to your heart's content. I personally think there could be a lot of improvements to be made
A lot of my inspiration came from
www.baron58.com. I "plagiarised" from the pics on the site to complete and design my TQ.