Yes 16 needles. Check to see if all the bobbins are the same. I have a Tiara which I love. I bought some extra bobbins on line and they didn't work. My husband used a micrometer and found them to be just a little thinner which made them wiggle in the case and caused tension problems. Only use ones from lad now. Have heard they make washers for this but haven't tried them.
Don't give up! I love my tiara.