please help

So I put together my Versacopter V2 and I think I messed up during the Calibrations and radio setup I and would like to redo it but I don't know how to reset the Gr18 and Mz-12. My problem it that the motors keep beeping nonstop and its not the startup beeping I have know Idea why and I can't...

I bought a Hobbyzone RTF Champ plane, and I have started moving on to scratch building. I was wondering if I could use my Champ's transmitter and bind it to another receiver. If so, which recievers would be compatible (Hobbyking link if possible) and if not, what is a better transmitter that I...