I have that machine also. It is not the machine really it happens with a lot of machines. If you take a stilleto, I can't spell it, lol, and when you come near the end guide the fabric with the stilleto through to the needle and it should be straight, often times we will forget right at the end to finish guiding it through. Also sometimes the feeddogs will take it wonky when not guided the rest of the way. Hope this makes sense.