Quick question on the Twipe

Does anyone know or think maybe its just too top heavy besides being tail heavy?

my concern is adding weight or moving it so the nose is heavier and then not being able to pull out of the dive.

If you've seen how it forces itself into a nose dive at times from a hover or straight flight, I think you'll know what I mean. (a very abrupt water fall actually) it can almost loop on the CG axis.