Sure you have've been goin thru this so many times at least on the forum. I'd like to know why somone says master 140 has 4 pins if mine has 5.

More, mine has a black plastic case around it and I could not find many of those either here or on yt. Could you clear it up please?
Secondly, could you give me some GOOD suggestions to pick it? I know it has spools or serrated pins. I got it picked it once two days ago but no more. It seems difficult to me to feel the counterrotation. Why? I'm getting mad at this.

pls help me!! Thank you soo much
