Bones Had another go with the B747-400 today Eventually got it up to FL400, and left it to settle. M0.84 NI 95.8 and 6% inclined nose up. Followed your instructions throughout. Next problem is the takeoffAt 200kts, yoke full back, 20 degree flaps and still had to wind on a lot of trim, just to get it off the deck.
Will have to work on that, or use autopilot for take off, limiting the VSI to 1500 and TA 3000 (any higher, and the vertical speed goes up too quick.