@Malcolm182 & NathanKell: Under what circumstances? Is this when you make a control input, the control surfaces lag the input slightly? Because that is intended behavior, partly realistic, partly to keep SAS from freaking out and making planes wobble like mad (though people somehow still manage that). I need more information, because I use B9 myself and have never encountered any issue like that. Basicly everytime. on the launch pad, wihle flying. I just press roll 4 e.g. and hold it, and as i said it goes to full deflection stays there a bit and snaps back to default state. (just let me know what else u need) i dont thinks its only visual, + the lift value is also changes when it happens.