I have made all kinds of the know adjustments, cleaned all kinds of parts, cleaned blades, untwisted the ends of the blade with no improvement. I even thought of bad blades, but switched clamps and no problem so far. Keep in mind, this is a very thin flexible blade compared to all the other blades I use. I have not had this problem with any other size blades I use, well a few times with the Pegas 2/0 spiral, but I expect it to happen more often with a spiral blade than a flat blade... Maybe I will play with it more some day when I an trying to not make pictures frames that I need to be making...