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Hey guys, long time no talk! Been ghost the past few months but I've made considerable progress in my sewing and shoemaking ventures. Photos to follow in another post! Anyway, I have a Consew 206rb. After having my machine for over 6 months, I up and decided to change out my needle, as I thought maybe it was dull and could help me avoid the occasional skipped stitch. Low and behold, I had been stitching everything with a size 22 organ needle! Now, I wasn't too upset about this, as all my work up until that point looked fairly decent. The issue comes in when I input a size 16 needle, which from my understanding is the correct needle for sewing leather, which is what I do pretty exclusively. Smaller needle = smaller hole, which gives a cleaner looking stitch. I thought I was winning, until the needle refused to actually "stitch". I'm using white 69 bonded nylon thread on some white cow leather about 3oz thick. The needle is feeding in the upper tension and the bobbin, but it's not locking the stitch, so when I stop sewing, there is just holes in my leather but no thread, on the top or bottom. Even more interesting, when I went to see on a different piece of scrap Horween leather about the same thickness, it worked fine! Any ideas on why this is? Does my needle really just not like this leather, or should I be making an adjustment somewhere? Stitching about 8 spi. Attached a photo of the leather I'm sewing with the size 22 needle just to give you an idea of what it looks like. Thanks