Guitar: Pro-Tone Squire Stratocaster, made in Korea

The problem is that when ever I pick a note, there is a bunch of excess noise around the note, even on the clean channel. Some distortions have this more than others in this guitar. Also, when on a distorted setting, if I turn the tone knob, at about 3-5 it starts to crackle. I noticed this after I took off the input jack plate off and barely rotated the input jack so it wasn't bent at an odd angle. Does anyone see the problem?