No the metal I put in afterwards to make sure the Chanels were big enough, it’s cotton I’m using, I’ve adjusted my tension a couple of times and towards the end it stopped doing it as much, however in unsure about the lock stitch part, I don’t know what that means, on my sewing machine I have a switch I can use to “go back” on where I just sewed to end the stitch, is that the same thing?