I have had problems in the past with my sewing machine 'eating' knits. I use my serger mostly while sewing knits, but sometimes (like with topstitching) then you need to use the sewing machine.
These are some things I've found that have helped me...
- Use a new stretch needle
- Use the foot that is completley flat and smooth on the bottom
- Use a little embroidery stabilizer under the fabric will help (tear away works best)
It's rare that I do but some fabrics just want to be contentious!
This is me working on the Farbenmix Olivia pattern for B.