I'm trying to learn to fmq on a vintage singer 15-91. I am using a good quality thread and a topstitch needle. Feed dogs lowered, presser foot down. I'm getting eyelashes on the top and bottom, but I think that is a speed issue. Both times the needles broke I had the machine going pretty fast, but was being careful not to move the fabric around too fast. I tend to have a lead foot
(bent the shaft on my new Brother machine awhile ago). I only have 2 new needles left and I don't drive so I'm hoping someone can give some suggestions before I break my last two needles or run out of the expensive thread. Could it just be my lead foot or is something else amiss? Thanks