I'm using B9, FAR, Karbonite mods. My problem is that my designs don't pitch smoothly, when trying to pull up the aircraft swings wildly and the prograde indicator jerks up and down, when I get close to the planes upper ceiling using using airbreathing engines its tough to keep it angled up (this design uses Sabre S, but I have the same problem with all of my designs). I have this issue using both normal and precise (caps lock) mode. I can use trim (alt+s) but it feels like I am constantly fighting to keep it pointed up. Also continues to be a problem if I have tanks full or running empty. Any answers to this issue or threads that answer this? I've tried searching the forums but i'm not sure if there is a more common name for this issue.