I do, but I've gotten very good at controlling it. You wouldn't notice this unless I pointed it out to you, but I intentionally pause when I'm speaking every few seconds to avoid stuttering. It's like placing random commas in sentences, or to use a metaphor, slowing down when driving over speedbumps in a parking lot. The stuttering still breaks through, though, particularly when I get excited and try to speak too quickly, or if I start to get frustrated with my inability to find the right words.