It's been rock solid for me for quite some time but now all of a sudden (on several different flights) as soon as i get to 25k feet thrust drops out and i get a brake ovht warning.Aircraft goes from about 290kts to 180kts. i feel like I keep missing a setup step, but I've done the same thing for startup as i have for months. Thoughts? Something obvious?   Ver 1.0.15.0