Help with level flying

[Vespula]

So been trying to work out level flying. I have seen many saying to trim as close as you can get it and then use small throttle inputs to fine tune. It's quite hard to even get anywhere close because it just wants to start going the other direction rather quickly. The few times i have done it and tried to use throttle, it requires way too much throttle to work. I have found the trim amount to be fine, just confused as to how i stay level.

[RG66]

Do you have your stability augmentation for yaw pitch and roll switched on? 

[Vespula]

48 minutes ago, RG66 said:

Do you have your stability augmentation for yaw pitch and roll switched on? 

I do

[Gadreel]

You should keep speed constant. Maybe try to set the throttle by watching the fuel flow gauge. For example set throttle to 4000 pph and wait until the speed settles, which should be around 350 KIAS. Then trim and try keeping altitude without changing the throttle. 

For me it is the most difficult plane to keep the altitude constant. 

 

[Zabuzard]

Its a bit hard to judge how much ur going up/down without some form of video or track.

Make sure you have the "Use FFB" option deselected in the DCS settings in case you are not using FFB, that can cause issues like that.
Similar extreme issues if you froze up your bellows intake or received combat damage on a area belonging to the system (for example around the rudder area).

Other than that its important to note that due to the bellows/bobweight system the Phantom constantly pitches up or down whenever speed or G-load change. Hands off it will oscillate up and down, more or less holding the altitude over a longer distance. It is some form of mechanical "autopilot".