Hi! Thanks, you two.
Yes, I have found the screw, and I've adjusted it quite a bit. But I find that, when the foot skims the surface of the quilt, I get stuck at the seam-intersections. If I adjust it, so the foot sits higher, the thread tends to brake (and the quilt bounces while I'm sewing). The plate shaped transparent foot gives me the least trouble, but after using the open toe foot for a while I now realize that I can't see what I'm doing with any closed foot.
So I'd really like to use the open one. And after a bit more practice yesterday I must say that it is looking quite a bit better already. But the problem with the seams is still there. And I can't really image adjusting the foot for every seam I go over... I mean, my next project was supposed to be a log cabin!! :-(
Anyone else have the same problem???