Originally Posted by
Macybaby
Since it's also predominantly skipping one needle, it could be the timing needs to be adjusted so that it's lining up better with both needles.
How does the machine sew with one needle and the widest zigzag? Try it with knit and without to see if it also skips stitches that way. Knits can be a monster on some machines. Ball point needles help, as they push the threads aside so the needle can pass between them. Sharp needles may penetrate the knit thread, and cause it to hold the thread too close to the needle so it does not loop slightly and the hook can't grab it.
I didn't even see that (duhhh), but Cathy's absolutely right, there now appears to be two problems. I've also had horrible trouble sewing knits, and even with a ball point needle it can easily skip stitches. You need to have the right size needles for the thread, ball point needle and the right width and tensions set. It really takes a lot of knowledge to get a good stitch. I've been thinking about this quite a bit (especially when I can't get it right), but if you want to sew a lot of different fabrics you need to have a vast knowledge of how machines and needles work with the fabrics.
I doubt this is a timing issue, but I could be wrong.
Even when it isn't skipping stitches there isn't a zig-zag pattern, so I'm still thinking there's a problem with the upper tension discs.
I'd solve the skipped stitches issue first though, then address the skewed thread tension. Skipped stitches can be obvious, but who looks underneath and checks for a nice, even ZZ?
