My 2 cents :
On my FCC2, i just had a little dead zone at the center; barely no curves.
BUT for the strenght, just calibrate it with the CCP. No need target, foxy, or whatever, you installed CCP when you installed the drivers).
Go to calibrate and click "next" while pulling/pushing on the stick when you consider "this is the max. value that i need to pull/pull".
Just apply the strengh that you think "good" for you, and DON'T pull/push the maximum value it can gives you.
Actually, i'm using like 50% of the raw value the FCC can go to.
Make sure in the CCP that this manual calibration is loaded when starting the computer.
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This was a game changer for me, especially when pushing for nose down or make a right turn : the raw value are smaller than pulling left or nose up, but it "feels" like it's the same strengh to apply on the stick.