Armycopter
Sounds about right. I've got my normal throttle curve 0,90,90 as well.
I only fly in Idle-up. Normal mode feels too much like a fixed pitch heli to me, especially when throttling down from FFF into a hover.
Idle-up is much more stable.
With the DX6 My Idle-up throttle curve is set 90,90,100 and that I tached at 2580 at 90%.