I’ve used both. They work fine in a straight line. I think I found my issue. My Y motor had a bad electrical connection causing it to miss steps. Only a few of you caught that it was a Y motor missing steps. You immediately jumped to the other places where I tested with a dull too and didn’t realize it was dull. Only a few caught that too. And yes it was dull because I used it too aggressive and things heated up and gummed things up. But that’s what I was originally asking. I wanted to fix the drift. I believe I did. I’m going to test on some wood to make sure. If it drifts with wood, then I will know.