I have a White superlock,but not that one.Mine is the 534 and i've had it over 20 years and have never had any trouble with it.Mine gets and has always gotten a lot of use.Don't know if this helps you.

I'd like to upgrade,to one of the newer ones with differential feed,but i just can't justify the extra expense just for that.So i guess i'll keep using this one til it wears out.
kathi

I have the Singer and absolutely love it. There are higher end machines that do more including decorative stitches and include extra feet...mine did not come with extra feet and discovered they cost plenty. I also discovered you can't use regular sewing machine needles in a serger, you have to use serger needles and most machines now have differential feed.

The lesson I learned there is not trying to get by cheap because it may cost you more in the long run on feet. If you can get a machine with extra feet included and possibly a 5-thread, at reasonable cost, go for it and have a wonderful Mothers Day.