They just did it for me and the wheel was 14 months "old"..
Just be patient... I think they know the problem and they will replace it.
Good luck !
I fixed the wheel a little while ago now... Here is the post I made at TWiP about it
OK. Here goes.
You will notice the picture below. The red circle highlights a cap on the back end of a Servo. Inside there is how the calibration is accomplished (I don't have pictures of the inside but may in the future). Under the cap which is easily removed with a small flat head screwdriver is a circuit board with an LED light and a small COG (I guess) on the end of the Servo shaft. The COG or tiny wheel has a bunch of holes in it that directly line up with the LED light.
So you power your wheel up, the servos spin the wheel all the way to the right. Then while the wheel is spinning all the way back left the LED is on and the light passes through the little holes in the wheel to a receptacle. I believe the receptacle counts how many pulses of light go through while the wheel spins left. Say 10, 000 pulses. The wheel then knows that it is 5000 pulses back to center.
What happened to my wheel is that little tiny plastic wheel (COG) with the holes wasn't attached to the Servo shaft any more. It seems they are just a quick press fit, there is no key of any sort locking the two together. For the moment I have glued the two together with some strong stuff but will probably have to hack saw the servo shaft in future to help the plastic, glue and metal bond better. Time will tell for that though.
Well that's all it was that broke my $300 (at the time) wheel rotfl I am glad I just went ahead and looked around a bit in instead of other going down other possible roads in front of me
I will say this though... I removed the screws on the metal plate facing you in the picture (the servos are protruding from it) and Logitech sure put some effort into their force feedback assembly
