Its stable enough that I can release a public beta of it. Its a program that will load your aircraft with the exact Weight and balance given how you load it and then send it to sim. Current I only have the Airbus A321 Map and Boeing 737-200 map done but the graphic kit for a couple dozen done. I have a more detailed description here: http://www.ravenfslabs.com/raven-aircraft-loader/
Beta Build: http://bit.ly/1NQYOXi
Comments and bug reports welcome, only known bug is the weight does not automatically update on some more complex aircraft. The fix is just reload the aircraft from the menu after you sent the data to the sim from the aircraft loader.
FS9 and above with FSUIPC is the only requirements