I've downloaded an American Airlines MD-80 from simviation's downloads, and the sound and panel for the MD-80 off of AVSIM, but I dont think the flight dynamics on my MD-80 are correct, because my MD-80 can make turns sharper than a razor's edge, is there any package or anything I can download to give me the correct dynamics?
You might also try adjusting the roll stability in the same flight tuning section. Increasing the value increases the stability. On some aircraft that will slow the roll rate, but one must experiment.