vox ad50vt

I just bought a vox ad50vt, and im in love with it. but i have a question. I have an epi les paul that i use with the amp, and on most of the distortion channels, when i have my hands just on the strings, and/or push the strings down toward the pickups it will make a humming noise. and when its loud, it will screetch when i push the strings down toward the pickups. I have tried the noise reduction method, but i has not solved my problem. So is there something wrong, or is it just something i have to deal with. thanks

Mike