I have a Brother PR600 6 needle embroidery machine, and all of a sudden on designs, the white bobbin thread is starting to show through, especially when I'm using darker thread. It's mostly when it is edging out. :cry: What can I do? Thanks.

Change your upper thread tension...

Is it just the one design or all designs? I would test another design before messing with the tensions!

It seems to be with most designs.

Well I played with the tension, going a little at a time to loosen it as well as tighten it, and it is still showing through. This is with just needle #2. So now I'm trying to find a repair man that will come to my home. The machine is way too big to transport.