Jaiade

I have never used the brands you are using but I have used it on DM and a longarm and on both the tension needs to be very
loose. And when you pull the thread though the needle the thread should not curl at all when you release it.. If it does, loosen the tension some more. I will say I did not quilt on the DM, I did applique; but on the longarm the main key was very very loose tension. As I said, I did not use the same brands as you, but it might help.

And go slow!!!