Please forgive if it’s not in the right place. this is my first time posting. I am having a problem with my sewing maching. It’s an industrial machine and I am threading it correctly with new string. However lately, the stitches are longer than they should be and spaced out more than they should. At some points while sewing the thread also snaps. Upper thread. I tried adjusting the stitch width and such from the button gage (from 1 to 6) hoping it will make the stitch smaller and closer to each other, as well as adjusting the string tension dial. But nothing will work. Does anyone know what the problem could be? Could it be the needle itself? Please help, i’m at a loss.