I'm not sure if something changed, but the dynamic brake on the GP38 has a very strange sound now. A few months ago, when I put the dynamic brake on, it really sounded great, like a large electric motor whining.. now, it almost sounds like when the brakes are dragging...scraping,, but really strange.. and it cuts in/out once and a while. I made sure all of my brakes were off, so that it wasn't some actual brake being applied.. it sort of breaks the immersion because it is so loud that it hurts my ears and sounds nothing like what it did before. Any ideas? I did re-install the game.. saved/restarted.. (EDIT) it sounds ok at levels 1 and 2.. maybe 3,, then past that it really starts to make the strange noise..