If I were having that much trouble, I would want an entire new machine. There are lemons in every brand and it sounds like you have one. IMHO, once you have a problem with a machine so early in your ownership, and with the amount of time in 6 months, you have a lemon. I would ask/demand a new one. I would also contact Janome corporate as well, share with them your list of troubles/repairs and I'm sure they would also want you to have a new machine, too. New machine, new beginnings. All my machines are Janome's and I have 4, including an embroidery machine. I love them and feel that their workmanship is superior to none.