Mike, your CG must be way forward. Mine is a 5-1/4" and it's still too far forward. Yours must land real hot and need a lot of down for inverted. I think you should move it back and reduce your elevator throws. If at 5" it's still sensitive then your throws are too high. CG affects stability (I know, duh) but too far forward and you will have a hyper stable condition and the model will fight you like a trainer to level off and you need a lot of elevator to effect control. Find the procedure for a stability test, sailplane folks know this stuff, and read it. It should give you a better understanding of CG. Reduce throws and use about 60% expo and it will be much more controllable.