Hi guys. I got my first tele today, off ebay. it is a small brand hand-crafted beauty (see picture). for the first 20 minutes of playing it, it was perfect, good quality for the price and sounded amazing. then, being the stupid amateur I am, I noticed the screw nearest to me that was holding the neck pickup in place, looked a bit loose. so I used a screwdriver to tighten it a bit. I didn't even stop to think that was going to move the pickup out of place. (this is where I mention that I haven't the faintest clue about guitar electronics, I have never opened up a guitar as I am terrified of doing that ) after I did that, I started hearing crackling especially if I played chords or plucked loudly. I fiddled about with the knobs and 3-way switch, but the crackling seems to be present in all switch positions.. I researched this on the internet but didn't find any definitive guidance. any help/thoughts would be massively appreciated. please!