My stitches are skipped because I can see where the needle has gone through the fabric but not stitched. Usually 2 to 5.
I also rolled over the bars to help if there were any low places. It seemed to be working well on my test piece. When I put a quilt on it skipped.
I am at my MIL's house this weekend but will try loosening up the sandwich and see if that helps when I get home.
I know tin lizzie is a low end machine but my husband surprised me with it 5 years ago and I am trying to make it work.
will update on progress.