I hope you have good luck with your singer 4423. I had one which I bought hoping it would last me forever. It worked great for the first couple of years. But then, liturally out of the blue, it started acting up. I hadn't even quite done 10 projects on it. The tension was always off for FMQ and it would often skip stitches. It was driving me crazy. I took it in for a service and that still didn't fix the problems. I ended up getting a Brother to replace it. I agree with what was already stated, I will never buy another NEW singer. Even the repairman told me that nowadays they are made to only last a few years, and the name "Heavy Duty" doesn't mean anything. But I wish you the best with it!