My zigzag.

[sa-mi-ra]

Whenever I try to sew zigzag on my sewing machine, it ends up looking like this:




It's totally uneven.
WHAT'S THE MATTER WITH IT DDD:  

[bookaholic]

There could be a problem with the way one or both of your bobbins (top/ bottom) are threaded. That happened to me once.  

[sa-mi-ra]

bookaholic

There could be a problem with the way one or both of your bobbins (top/ bottom) are threaded. That happened to me once.

My normal stitches were crooked once, so I threaded my sewing machine again (got better quality thread) and the problem was solved. This one's persistent, though. I'll try to thread it again and clean the machine, I'll tell you how it went when I'm done.
Thanks for posting : )