When I decided to learn to fly my helis inverted I never thought that I would feel for the second time like a total beginner on his first attempts. I am doing all only possible mistakes: Giving left input when i want to fly to the right, forward stick, when I want to fly backwards, I smash the heli into the ground when I want to go up, because I give by mistake positive collectice pitch instead of negative. It feels the same like when I started upright hover with small frog jumps! Just that I thought I could fly already a bit. So it's a challenge and my respect and recognition for 3D pilots is growing hugely. I will continue... but it's a long, long way to go! Like it was in the very beginning! Like it is in general with RC helis. Lifelong learning guaranteed!