I can hear a few of the Amish guys who helped me sew,,,,,, 'Michael.......SLOW DOWN'... That was on a Union Lockstitch that would go 200 miles an hour...... Chester threatened to turn the air motor valve almost off.... actually he did and slowed the machine until I learned to stitch slowly. Helped immensely on the harness work they were letting me do. SLOW DOWN....... Keep your eye on the line about three stitches ahead. HAVE A LINE was the other thing they harped on...an awl scratch, a stitch groove, something to follow.
God bless