i have that same machine and when i bought it they set all the dial are set on 3. there are three places you can see
numbers and they are all set at 3 and they told me i should use so fine # 50 thread. so i bought some of that
and it is the only thread i use on it. when i quilt i take out the feed dogs. i actually just keep the feed dogs out. that is
all i use the machine for