I've been using the TX/F1 addon combo for about a year. Suddenly out of the blue, the Button 2(upshift paddle) stopped working overnight... in the Control Panel software it clearly shows that Button 2 is constantly depressed, all other functions work perfectly. I contacted Thrustmaster about it, and after extensive proof that I provided which took over a month to correspond, they shipped me a replacement levers kit. I took the wheel apart and had the new levers in within 20 minutes, however the problem persisted(both on X1 and PC). I have yet to hear back from Thrustmaster, who I provided this information to on Monday. At this point I'm at a loss for words and I'm desperate for a solution, the F1 wheel was the best feeling wheel I have used, very comfortable grip, super handy rotary encoders for brake bias adjustments, and the dual way paddles let me rest either hand on straightaways without having to worry. Any advice is highly appreciated!