The CS 727-200/-200F is underpowered.
So there are three things that can help.
You can reduce the amount of fuel, so its about 70% - 75%. The lighter it is, the better it performs.
Or you can edit the aircraft.cfg file and increase the thrust, which is what I did.
Thirdly, you can use Michael2 mod here: http://www.captainsim.org/yabb2/YaBB.pl?num=1296889437

If you choose the second option (what I did), backup the original aircraft.cfg and change this:

[TurbineEngineData]
fuel_flow_gain= 0.003
inlet_area= 18.000
rated_N2_rpm= 29920.000
static_thrust=17400     //15500
afterburner_available= 0
reverser_available= 1
ThrustSpecificFuelConsumption = 1
AfterBurnThrustSpecificFuelConsumption = 0

The bold blue text is the new thrust, the red text is the original. Copy and paste this line:

static_thrust=17400     //15500

into your aircraft.cfg overwriting the original for both the -200 and -200F. It will greatly improve their performance.

Hope this helps.

Mark