I am not sure if the F-16 is very forgiving or what. My old Skymaster F-16 1/8 which I don't have with me anymore had the CG at 140mm and the jet flew spectacular, had none of the bad habits Craig talks about. I never had the chance to test the CG further back since I sold it but I flew a lot this jet and I never had any problems with it. Landings where vere smooth and easy, without using too much elevator. Stalling this jet had no problems as it will not even drop a wing. One of the easiest jets I have flown.
But again I didn't test the CG further back so I do not know how it handles first hand, I can only tell you that at 140mm it worked great.

Check the video:
http://www.jetsrc.com/videos/F-16_Tiger_JetsRC.wmv

Michel