I have this issue with my Brother 450Q, too. Since I don't make anything to sell, it doesn't bother me that much, but I notice the difference between stitches on it and my much older and yet wonderful -- I don't care what anyone says! -- Singer Golden Touch 'n Sew. The Brother 450Q, a gift, had been a demonstration model and I think it may have been abused. Part of the housing is also slightly askew; it's possible it was dropped. Everything works; I just get slightly angled stitches.