I used to have a Supra. It purred like a kitten with me doing all the maintence. I took it in for service once after 30 years and the service person did something to the Elnagraph and it started making a really bad noise. I oiled it and the noise would get a bit quieter, but it never really went away. I was told the Elnagraph needed to be replaced and in those days I could not find another machine to use for parts. I was very sad to let it go since it sewed everything I could get under the presser foot if I used the right needle -- the folks I bought it from new told me it could do this and it did -- even cardboard with a leather needle.