[There's a reluctant silence for a very long moment before Ezra finally gives in. It's just not something he wants to admit, but he can't tell Leia what's really bothering him here unless he tells her the whole story.]

He fixed a power imbalance. My design's a little different from normal lightsabers. I'm not very good at deflecting blaster fire yet, so I wanted a ranged component that I could use to buy myself time. Unfortunately, that meant wiring the power source to basically two different weapons. Even if I'm only using one at a time, it always felt like there was a chance it might short circuit. Except now the problem's gone.