Hello,
you can found the answer in our FAQ:
http://forums.avsim.net/dcboard.php?..._id=3181&page=
here it is:
Q: Once you have a new Take off weight, the bird turns slowly to the right side, lift its left main gear up and collapses, standing on the right wingtip
A: Look up yout aicraft.cfg for the -200 model, search for {weight and balance} section, see if there are more commas (",") than periods ("."). I had a country setting with placed the decimal as a comma instead of the period; simply change your country setting at the control panel to make the decimal a period (.), use TCE, change your weight and balance with the TCE, syve your aircraft config, return to country settings, reset it to the comma (if you like), start your simulator, start your cs727 and try it