Okk dream team, I cant read the needle, I am going to assume it is a 23, since that is what I also received a 10 pack of, I am using 207 thread and I have tried to rotate the thread tension in two places but not really getting any difference in the backside. One of the adjustments is near the top left back of the machine and the other I adjusted in pretty close top the needle itself on the side, I rotated both of these about a half turn, as the manual says small adjustments, is this not enough to make a difference? I did not want to turn these things too much and really be in trouble. Any ideas,