Originally Posted by Whigrose

You don't say which color is the bobbin thread and which color is the top thread.

Ah, yes. The blue thread is top thread leaving the white as the bobbin. I have indeed tended and checked both the bobbin and the case. I have not taken apart the upper thread tension - will give that a shot ( I have done this multiple times on other older machines.

The photos show the improvement progression, but it just doesn't deliver a nice stitch one would expect from an older machine. I have had numerous older machines with stitch quality leaving the modern machines lacking. I'm really hoping to get the same from this one.