True beginner here by about 3 weeks. Been playing some Level one songs. Slides are coming fairly easily for me on all strings until I get to the dreaded 4th string which is wound. While making a 2nd to 5th fret slide a screech occurs that literally makes my hair on the back of my neck stand up. So my question is this. Is this a matter of mechanics and I am doing something wrong or is this a characteristic of a wound string and I should see out one that is not wound.
Thanks