When doing a hand guided ( no computer) edge to edge panto my Avante started making short ( 10 second) squealing sounds. The sound is similar to the sound a loose fan belt makes on a vehicle. The sound did not happen every row but when it did occur it was always mid row. There was no changes in stitch quality. My machine has 4.5 million stitches on it and was just back from routine servicing. The sound was not there prior to servicing. I have contacted the HQ who serviced the machine and she indicated she heard no such sound when the machine was in her shop.
Any suggestions what this might be and should I continue using the machine.
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