I AM WORKING ON MY SECOND PLAN - SIG 4*40 THAT I PICKED UP AT A SWAP MEET. I RECOVERED THE PLANE AND HAVE INSTALLED ENGINE, RADIO, ETC. NOW I AM READY TO ADJUST THE CG, BUT NOT HAVING A MANUAL, I'M NOT SURE WHERE TO SET IT. SINCE THIS IS ONLY MY SECOND PLANE, I DO NOT WANT TO GUESS WHERE TO SET IT AND WAS WONDERING IF ANYONE COULD TELL ME HOW FAR BACK FROM THE LEADING EDGE OF THE WING TO SET IT. THANKS FOR ANY HELP.