Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Tension issues and grinding

I really wanted to like this machine. Got it on a lightening deal from Santa to my 9year old daughter. Out of the box before threading or anything it was grinding. Santa failed on this one. Brother was going to send it for repair, but I just got a replacement from amazon. This second one has tension issues. Too tight, too loose. Changes within the same run. Frustrating. I spent an hour and a half working on it and finally got too frustrated. She came to me later so sad that it wouldn't work. There is no way she could work on this somewhat alone with the thread catching in the bobbin case so much. May oil, may get new metal bobbins, but may send this second one back. I have another brother, the 400 version for embroidery and sewing, I love that one and really hate this one.