Hi I am new to this forum but not new to flight simming. The 707 appealed to me because I used to fly in it in the late 60's and early 70's. However flying the sim version is proving difficult.Other than hand flying the craft to any given altitude I can find no other successful way.This means that engaging AP and getting on the GPS track as you do when flying all other aircraft in the sim world , has to be delayed until you reach crusing altitude.There does not seem to be the facility to dial in an altitude and fly to it in AP mode.I have tried engaging AP and locking onto the GPS route then using the Up and Down control in AP ( which disengages Alt Lock). This is so crude as to be ridiculus as there is no way of controlling climb rate. Stall usually results. I have yet to get to the point where I have to decend to specific hights when instructed to by ATC. I am sure that there are many of you out there who have successfully solved this problem.
I accept I will always have to control the airspeed manually but there must be a smother way of achieving altitude.

Mick.