I have an old Morse, but it doesn't zig zag.I agree you have to keep it oiled. I oil mine before every use.I got mine at a yard sale for 3.00,took it home cleaned her up and have been sewing on her for 15 years now. Still sews as good as the first day I got her.I sew all my quilts on her, I've even sewed a gun holster on her.I even took her outside and repaired an old canvass tent with her.Just a great machine, a real workhorse.