Working on the 780D AGAIN today>>>>>
Topstitch needle==big looping
Change to 11 needle---loops
Change tension----on top--looping
Thread tries to slip out of first tension disc even when I place a finger there to keep it in and then it hooks around bobbin winder
Stitching on denim with cut away stabilizer
Taking copious notes as I proceed to show repair person--threading AND REthreading--
Changing size of needles and where I purchased them--stitching EVERY variable I can possibly think of--
BOTH machine and I go to repair person tomorrow so he and she can watch ME SEW!!!!!!!!!!!!
I have a dozen samples to show----
Should be interesting
God Bless You!!