Radarman - I'm pleased to say, I have 2 great Boeing 777's now that I have worked out the problem of these aircraft being slow to takeoff! Thanks for pointing out the window on FSX opening screen that could show me fuel and payload. I must have looked at that box 1000's of times but never had the need to open it. Once I opened the fuel and payload window, it showed that I was about 60.000 pounds over gross. When taking a closer look at the information this window provides, you can easily figure out if it is payload related or fuel or both! In my case, both aircraft were over in the fuel department which meant the passenger and their baggage could stay put! For some reason, the only aircraft that has ever given me a problem, was the 777- 200 series. I have 3 - 777-300 series aircraft which were "spot on" from the moment of download!
Bottom line is, once I knew it was fuel related, I had to determine what was causing it. I managed to find online some Boeing fact sheets/specs for the 777- 200 series, which clearly showed what fuel tank capacities were appropriate for each model of this particular aircraft. I did have to tweek the aircraft .cfg files accordingly and the weight and balance did come back as good!
Anyway, thanks again! Anyone that is having performance issues with their aircraft, you have one window you can easily check to see if weight and balance is playing a role!
Have a nice day! - Rick