Thread Problems!
I was recently doing some SID, using Superior Threads monofilament as a top thread and their Bottom Line in the bobbin. The monofilament was smoke in colour but since my backing was a light cream, I used that colour in my bobbin. No matter how much I played with the tensions, I could not prevent the bottom thread coming through a little wherever the needle (top stitch #14) pierced the fabric. I tried Magnifco (black) and again the light coloured Bottom line as my bobbin thread and had the same problem. I know that my machine will soon qualify as a relic but is this something that I should expect in a new, upper-middle range of sewing machine?