Friction in general is just bogus, so there's no helping you there.
That's not entirely accurate. Good control of a spinner hinges on a proper balance of flywheel weight and friction. Too much friction, and it's hard to use. Too little and it feels "greasy" and makes it easy to overshoot. Too little friction in combination with heavy flywheels (often associated with those "long spin time" spinners) will exacerbate the problem. High levels of force required to overcome the large moment of inertia associated with heavy flywheels are less of an issue with lower friction spinners (they move easier), but overshooting the desired position becomes common, as there is little friction to help slow it down.
Spinners have to feel "right", and a
little friction will be part of that magic equation, just as it is with the intentional friction caused by the chain on the 720 controller being discussed in another recent thread.
RandyT