OK. I know this has been discussed in the past...but for the newbies like me...its helpful...I was having issues with my machine when using coats thread...never thought it was the thread until another friend said she had major issues bought it to be repaired and they told her to change the thread to a higher end like
http://www.sulky.com/ she has had no problems since....I just bought all the same thread...yes it cost more but worth it.