Sometimes advice is wasted if the guy receiving the advice doesn't apply it correctly. There is no magic involved with finding a flyable CG point on paper for any plane, it's just an easy to learn skill that anyone can do. Once learned, you don't need the factories' CG point for anything else but a reference to check your calculations with.
If you had the control throws cranked way up to horse around a nose heavy plane, then didn't reduce the throws after the CG was corrected, then there you go......splat.