I wanted to do the 402 mod by replacing the 701 clicker with the 402’s. I did it, but the pen will not function right. It feels kind of gritty, and the clicker will only work when you click very hard. a light to normal click will not make the pen come out or retract. Can someone tell me where the spings/parts go and possibly post pics. I must have something in the wrong place. I’ve troubleshot by putting back the old clicker, but it’s no use. Same grittiness, etc.