Thank you Wizcrafts, I am still using the bobbin that was loaded with the machine when I picked it up from the leather machine co. I think I will attempt to wind a bobbin myself per your comments. I hope this fixes things, again, am still learning. Trying to follow what all the leather machine co. videos suggest. The long leads of thread before starting to stitch also makes sense. I do notice the knots up first at the beginning of stitching then they might go back down for a couple of more stitches. Thanks guys!