Hello everyone, I need your expertise to help me sort out my problems. I recently bought fsx (been using fs9 for years). Anyway I have a few problems with the default 737 and 747. With the 737 I waste WAY too much fuel and the engine runs at 80 percent N1 at FL 300 and above not sure if that's normal. The 747 feels even worse. Upon takeoff I can barely lift the plane up only past 205 kts while it's designed to rotate at 180 kts or even less. I get to FL360 it pitched to 6 degrees and ran at 90 percent N1 during cruise which in my opinion seems like I'm doing something wrong. If anyone has some answers I'd appreciate it.