Hello,
I have exactly the same timing probleme on my 31 K 15. I would like to ask Wizcrafts where is exactly the eccentric screw and nut that needs to be loosen in order to adjust the position of the hook ?
Here is a picture, where is the screw? A or B or somewhere else ?
I would also like to add that the hook only fail to pick up the top thread when I have two layers of quite thick fabric like felt. Otherwise, I have no problem with sewing 1 layer. I was always able to sew thick layers of felt and leather before the problem happened 2 days ago... I am pretty sure it is a timming problem because I spent long hours looking at the moment when the hook fails to pick up the top thread, but any suggestion is welcome !
Thank you.