Ripmax in th UK, has a HAL2100, that is the PA-1. At least the one I used was. It had the dual-aileron set up. You can go to
Ripmax and go to their price list section, then radios and accessories, then Hal Autopilot...all it shows is the price in pounds...you can contact them at Ripmax, and maybe have them send you info...it's the PA-1, unless they have changed it....
Once in a while, you find one here at RCU, or Ebay. I just bought one last week, the PA-1....