RE: Power to hover?
If you're getting more negative pitch in idle up than positive, I'd say you need to adjust your linkages so that your swash is in more of a neutral place while at mid-stick, or - check your pitch curves. I set mine all linear in all modes. That way I don't have to change my thinking when flipping between flight modes. I run 0' pitch with 50% of stick movement. +10 / -10 pitch. As far as throttle goes - I alwasy ran mine as wide open as I could, but that's me.