Often times some aircraft (default and addon) in fs9 seem to not want to turn very well...some say you can hit F11 and F12 respectively to turn the plane back and forth from left to right, where F11 makes you move to the left and F12 to the right...but some say there are better and easier ways.
Go into the aircraft.cfg (of each aircraft) and edit what I show below....
Here's the contact points from the Milton Shupe Grumman S2F Tracker that hasn't been changed as it wouldn't turn left or right...
"[contact_points]
static_pitch = 3.93
static_cg_height = 6.75
tailwheel_lock = 0
gear_system_type = 1
max_number_of_points = 9
point.0 = 1.000, 14.087, 0.000, -7.808, 1950.000, 0.000, 1.050, 180.0, 0.180, 6.142, 1.000, 6.000, 6.000, 0.000, 150.000, 150.000
point.1 = 1.000, -.95010, -9.30, -7.604, 2500.000, 1.000, 1.500, 0.000, 0.921, 1.260, 0.800, 6.000, 6.000, 2.000, 150.000, 150.000
point.2 = 1.000, -.95010, 9.30, -7.604, 2500.000, 2.000, 1.500, 0.000, 0.921, 1.260, 0.800, 6.000, 6.000, 3.000, 150.000, 150.000
point.3 = 2, -20.738, 0, -5.28, 1600, 0, 0, 0, 0, 0, 0, 0, 0, 9"
if you want to be able to change the wheels to move here you go, ignore everything other than the bolded like I have above (unless you know what you are doing)...skip to where you see 180.0 on that line and change it to be something like 65...below
point.0=1.000, 14.087, 0.000, -7.808, 1950.000, 0.000, 1.050, 65.0, 0.180, 6.142, 1.000, 6.000, 6.000, 0.000, 150.000, 150.000
not sure what happens if we changed the numbers before and after would do... I know some areas of the aircraft.cfg but this is deeper than my knowledge goes..but really it looks like all you have to do is change the 180.0, to 65.0, and
PLEASE PLEASE PLEASE DO NOT DELETE ANYTHING ELSE or it will change the way it flies dramaticlally!!