It cracked me up. I wonder - this machine has had very little use. The decals are unfortunately silvered. But I can tell that it is like a new machine otherwise. When I got it the needle was in backwards. I bet that really fowled up the tension. Threading it backwards will fowl up the tension as well. Hang those little numbers. There is info how to set a tension here:
http://www.quiltingboard.com/vintage...s-t170748.html