Captain Sim 2 wrote on Feb 24^th, 2014 at 9:02am:

You need to read Manual and Knowledge Base.

I read all three manuals. They don't explain why the auto pilot does not work as it should.

Aside from that, my flight simulator experience goes back more than 20 years, which includes flying a detailed 727 addon from another publisher for MS FS9 for many years. I also own a copy of a original  727 operating manual from a US airline, since the 727 is my favourite airplane. So I thought I might change to FSX and try the Captain Sim 727.

But the MB IV auto pilot of your 727 sadly turns out to not work as it is supposed to. As mentioned before, the turn and pitch controller has no effectiveness at all in in terms of its pitch function. And the stabilizer trim is unrealistically sensitive, which, in combination with the not working pitch control of the auto pilot, makes it barely possible to fly this airplane. The altitude hold function also does not work properly. It makes the airplane behave like a rollercoaster during cruise.