My mom's old Kenmore sewing machine skips stitches unless electrical tape is placed under the pressure foot like so. The feed dogs are okay and the machine is well oiled, what gives?

Understanding Feed Dogs (Raising & Lowering) on Kenmore 385 Series

Found my first sewing machine dumpster diving today! Think it will

I noticed the stitches are slightly angled? Is this normal/a

What causes this? ends of larger models curve up : r/Ender3Pro

Sewing machine mash-up: Bernina 440QE and the Juki 2010Q

why is my sewing machine not letting me zigzag? : r/sewing

I noticed the stitches are slightly angled? Is this normal/a problem? : r/sewhelp

Blog – Professionally Restored Vintage Fine Quality Sewing Machines

HEAVY DUTY METAL FRAME: Adds stability and provides long lasting durability SEWING MACHINE ACCESSORIES: A variety of accessories are included

SINGER Heavy Duty Sewing Machine With Included Accessory Kit, 110 Stitch Applications 4432, Perfect For Beginners, Gray