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Hello? Is this the sewing machine repair shop? [calm] Yes, this is Ahmed, the maintenance engineer. How can I help you? My machine is eating the fabric! It's pulling it down into the plate and making a terrible knot underneath. Ah, that's what we call "bird nesting." It sounds like a tension or hook timing issue. Can you fix it? I have orders to finish by Friday! Of course. Please do not try to force it to sew. That could break the needle and damage the hook. I can be at your shop tomorrow