I took the Lear up to FL450 and at full power it is way more than 100 kts too slow, more like 150 kts too slow after a few minutes up there. I looked for some sort of external air anchor to see if I might be towing a drag chute or sometime but I think it is a coding problem.
The plane seems to be a lot closer to specs around FL370 - speed wise, and looks more correct. At the upper Flight Level the nose is about 10 degrees, well maybe 9 degrees high. Almost like a final approach attitude. Lower down it is more like it should be.
You know, it really wants to fly fast at FL510. Something really close to 0.81 or 0.82 would be ideal.