[It's easy, Rinoa! Train for years and have gunblades designed for it!]

If you ever upgrade it, maybe an adjustable grip weight would be a good idea?

[She flips out her own weapon again, holding it out grip-first. Her make have an enlongated grip that extend past the wielder's wrist.]

The balance on these is shifted to the wrist. I don't think you could get yours back that far based on its design, but if you could pop a weight further back down your arm you'd have at least that little bit more leverage? And then slide it back forward for two-handed use.