@torob: thank you for pointing this out to me. I'll definitely look into it.
@Jan: They only provide US training (right?). The R/T is quite different in the US.
Thanks to everybody for their comments.
Until today, I didn't fly for a few months and noticed that my R/T skills were a bit rough, but I managed ok. The fact I didn't fly for a few month was the reason I posted this message.