Arduino Mega 2560 and MIDI Problem???

Hello!

I have Midi controller project in progress, already long time...

Everything basically works just fine. But MIDI acting strange, especially with analog inputs, meaning potentiometers and faders.

If I connect one potentiometer or fader, everything work's just fine, but when adding second or more. TX start sending Midi signal without stopping, sometimes it stops when I move my hand more near to arduino, or keep my hand's still. I don't know is that ground problem or not, just weird is that one potentiometer work just fine, and digital input's are fine... Anybody have any idea what happened here???

Base on my project I use Robelix Hard Dj Code, and I add it here so everybody who can read it maybe find something what is not right.

Code is too long to send it here so You can found it here