Hi,
Give this a try next time you are going to pivot when you get to where your going to make the turn and pivot make sure before you make the turn the needle is on the way back up even if you have to turn the wheel with your hand.
It should help that is what I was taught in clothes sewing class. I just love to sew. Dosen't matter what it is.
I hope this help let me know. Have a good week.
Pam Bflo, NY