I'm a pusher. I tend to shove quilts through the machine and it gives me uneven stitches every time. I have to remind myself to let the feed dogs work and support the quilt weight so they can work.

The weight of the quilt can mess up the stitches. Is your surface flat?

Before I got my sewing table, my quilts would get caught on my acrylic table. Now with a nice flat surface things go smoother. I just have pay attention sometime when most of the quilt is toward me, I put it over my shoulder and not in my lap.

Good luck

Rethread both top thread and bobbin and make sure bobbin is wound correctly. Are you using same thread on top and bottom? Practice on sample to make sure stitching is good. Also there is a "top Stitching" needle that is longer than regular needle. It is good to use if your quilt sandwich is thick. I even use it on fleece to make sure needle is going down far enough to pick up thread from the bobbin. Only adjust the bobbin tension as a very last resort!

I agree with the others that typically when using a walking foot and you are getting uneven stitches its because of the weight of the quilt is creating a drag , and the quilt will not feed at even intervals/stitch. Make sure you have some slack in the quilt sandwich and support the weight so it can feed evenly.

Maybe this link might help you.Good luck!

http://www.youtube.com/watch?v=Ox8qRhWF3CI

or search for 'Sewing Machine Pressure Settings for Machine Quilting' by crazy shortcut quilts

I would make sure I had the correct needle size, for the thread size you are using. I learned a major lesson from this.

It has alot to do with the weight or drag of the quilt. Believe it or not, if you put the quilt over your shoulder, it reduces the'drag/pull'

Have you adjusted the pressure?

I'm a puller. My quilt tends to not feed properly because I'm pulling on one side or another. I find my stitches are nicer and more even when I let my machine do its job. I'm working on it. lol The machine is designed to do it...I'm just not designed to let it. :lol:

I have a Viking machine that has a pressure foot dial and for normal sewing it is supposed to be set at 4. When using the walking foot for quilting it is supposed to be set at 2.5. It makes a world of difference. I also lengthen my stitches just a tad too so I get nice even stitches.