Captain Sim support and Mark,

I don't have FSX acceleration.
There was no problem with  LC/GS engage procedure with  SP2.2 and AP was  PERFECT.
After dowload 2.3 and activated K#4897 still  I don't have Pitch control and, Localizer working but not GS. During the approach, as soon as  GS moves and goes  closer to level flight line I shut down   Alt Hold and switch to  AUTOGS. Yoke rapidly starts to move forward and backward., tries to capture GS, puts the plane violently goes up and down,AP cannot capture the GS. AP puts plane into dive to ground.

In normal condition  autopilot receives signals and  sent to trim to put the GS in actions. You will slightly feel control-yoke movements.If look at my  trim wheel you will not see any movements during control-yoke rapidly moving. Looks like my AP  GS  connected to Yokes not trim. Or some connection is missing.

Now I am lost...I also tried  Colonel Scott AP improvement guidance. Pitch control improved some way, but GS was not capturing and tracing the signal.

Mark and Matt I am glad AP working well for both of you. I think you all have FSX Acceleration.

Its clear understanding 2,2 was working l and has no conflict with FSX Acceleration, but I cant say some statement for 2.3 . If you don't have FSX acceleration 727-100 andl 727-200 effected with same problem.
I think  my only choice ,four years later, I have to go and spend $38 and to buy  FSX acceleration(??) if I want to continue fly 727100-200 .
I hope there are still some  other solution available
Thanks
Sanal

Here is my Autopilot file, Please review:

[autopilot]
autopilot_available=1
flight_director_available=1
default_vertical_speed=1800
autothrottle_available=1
autothrottle_arming_required=1
autothrottle_max_rpm = 90
autothrottle_takeoff_ga=1
pitch_takeoff_ga = 8
max_pitch=10.0
max_pitch_acceleration=1.0
max_pitch_velocity_lo_alt=2.0
max_pitch_velocity_hi_alt=1.5
max_pitch_velocity_lo_alt_breakpoint=20000.0
max_pitch_velocity_hi_alt_breakpoint=28000.0
max_bank=25
max_bank_acceleration=1.8
max_bank_velocity=3.00
max_throttle_rate=0.10
nav_proportional_control=14.00
nav_integrator_control=0.35
nav_derivative_control=0.00
nav_integrator_boundary=2.50
nav_derivative_boundary=0.00
gs_proportional_control=20.0
gs_integrator_control=0.58
gs_derivative_control=0.00
gs_integrator_boundary=0.70
gs_derivative_boundary=0.00
yaw_damper_gain=1.0
autoland_available=0