Ok... so the screw i was referencing, i loosened it, re-tightened it, and and the slide moved when i pressed record! Apparently i will need to lubricate this mechanism as mentioned by other user. I have never has to lubricate a tape deck before so any pointers would be much appreciated! Also if anyone can explain why the tape was sounding in slow motion id appreciate that, as i also have another tape deck doing the same thing