Just received my new Singer 4423 sewing machine. only used for about 1 hour so hard to give 5 stars yet. the reason for the 4 star review is that I’m experiencing issues with tension or timing. threads bunch up in bobbing case and i have to stop, clear out thread and re-thread machine. once I finish my project and see weather or not there. is an issue with timing I could give a better review. I have high hopes to love it so time will tell.