Be extremely careful with the Rotorway.
I know a very experienced pilot who dabbled with these a few years back and built a couple.
He probably had about 12,000 hours rotary at the time on Hiller 12E's, B206, H500 and Llama in the mix.
Rotorway advised him to get factory training which he conceded.
In hindsight he mentioned that without the training he would have probably crashed!
They can be a little tricky apparently.