1. Why is it easier to fly a dual flapping heli that a heli with a solid axle or seesaw hub? I was getting really good at flying until I changed the Impala trainer to the solid axle now I do good to stay up for 30 seconds - with the heli. Why is that?

2. Is this solid axle setup a true representation of the real thing when flying helis? I am going to be flying a raptor.

Thanks for the help.