I don't think there is anything that could define "too much". While the inherent tilt is necessary to offset the tendency to drift sideways due to the tail rotor, a tilt will also occur when you are hovering in any wind whatsoever - the heli will need to lean into the wind to maintain position. If it stays in one spot, it is not too much! Even full size helis have to do this - it is just part of the flight dynamics of a helicopter!

- Tim