THIS IS THE QUICK JUST WANT TO HAVE A GAME WAY TO FIX IT OR THE IM A SCARED LITTLE GIRL WAY 
If you want to do it properly skip to the next post

1. Carefully remove the score reel only not the cog below it.
2. From here take a toothbrush dip it in metho and clean the place with the arrows as best you can try get into where the
    metals rub together.
3. Put a tiny drop of machine oil where the two metals rub where the arrows are
4. Clean PCB with metho then the Green jexpad thingy (see step further on slack ass )
5. Put it back together in reverse of how you pulled it apart.

Now enjoy your machine but be prepared to do this regularly.