You have a good memory Michelle

Yep, my Ellure has the same issue with the double needle

I've tried everything I can think of to no avail. I finally just quit using a double needle on it. I'd love to know if anyone else has figured out how to successfully use a double needle on an Ellure and what their secret is.
As far as the skipped stitches on the topstitching, I'm not sure. My Ellure has topstitched through four layers of denim and as long as I go slow, it does great. The only thing I can think of is to try a fresh needle and rethread the machine and the bobbin.