I own a G25 since December 2007.
- Reverse button broken. A simple soldering job fixed it.
- Pedals spiking. Just open them and clean.
- Shifter behaves weird. Full dissasembly and cleaning, working well.
- More pedal spiking. 20% of death zone to avoid issues as cleaning didn't solve it.
- Even more spiking. Bought new pots, working ok, not as good as originals.
- Shifter went nuts. Another dissasembly to fix it.
The wheel itself has a very disturbing slack/noise, but I'm afraid to open it and find an awful sight