fsx sluggish controls on some planes

hello to you:
how can I adjust the controls on planes. a few planes has sluggish controls and want to fix it some how. by sluggish I mean turning, climb and descend. when I take off from a 12,000 ft runway I should take off about 3/4 of a runway. not with the yoke pull all the way back on a 12,000 ft runway, ran off the runway and crashes into buildings and trees come on now I'm flying a 777. eventually I take off after I ran into some buildings and trees after another 5000 ft beyond the runway. but even if I can get up into the air the controls still sluggish on turning and climb and descend.
bombardier
how can I adjust the controls on planes. a few planes has sluggish controls and want to fix it some how. by sluggish I mean turning, climb and descend. when I take off from a 12,000 ft runway I should take off about 3/4 of a runway. not with the yoke pull all the way back on a 12,000 ft runway, ran off the runway and crashes into buildings and trees come on now I'm flying a 777. eventually I take off after I ran into some buildings and trees after another 5000 ft beyond the runway. but even if I can get up into the air the controls still sluggish on turning and climb and descend.
bombardier