Sometimes when I'm in decoupled mode I will suddenly not be able to throttle up or down. Strafing left/right/up/down and rotating with the mouse still works. I can fix this by toggling to coupled mode and then back to decoupled mode. I haven't found a pattern for what triggers it yet, it seems to happen randomly. I have 'x' bound to toggling coupled/decoupled. I noticed this was bound to 'boost' by default, so I unbound boost to be sure that wasn't interfering. Any advice is appreciated, I always flew decoupled in 2.6 and this is really cramping my style.