1. While running at low RPM's low enough so that its about to stop are hard vibrations normal? I have it set up so i can kill the throttle via radio if I need to. Will running too lean or too rich cause this?

What engine and prop are you using? It is possible to get some vibration at low rpm, especially in single cylinder engines. The prop balance may also have something to do with it. Let me know_bob

to slow the idle can cause the vibration

I got it, my prop had a few dings in it and therefor was outa balance.

thanks for the help guys