Not bad.
Some of the things I noticed that are not right are:
Noise when flaps move
Only got the FD to display one time and with alt hold selected the FD only followed,not commanded.Have not yet managed to put the FD in app mode.
HSI knob only moves one way.
Nav radio can only be tuned to a lower freq.
No tail skid when gear is down. Didn't notice if tail skid light is displayed on FE panel.
With full throttle the EPR gauges should go past 2.0 EPRs [Unless the wx is really hot.]
The sink rate warning goes off during a normal app on the GS.
However,overall it is fairly close to the 727.
The roll rate is about right but it takes too much elevator pressure.
The power to airspeed parameters and pitch with TO power are correct and are pretty good.
I give it a B-.