sensitive controls

:-jumpy Help please, i find a lot of my aircraft are very sensitive and difficult to make a nice smooth flight and landing, some of the heavy stuff are O.K. I tried all the settings in FS9, but find these do not make a lot of difference. I use Wingman Attack 2, When I do a Calibrate aand troubleshoot, there is still no improvement.Do I need a nw Joystick, if so what is a good one.Steve