Warranty claims are almost non existent in America when it comes to racket problems. First, I had 2/4 of my 3U JS10 Original Color have sinking grommet problems. Ironically I had 4x 4U JS10s before and never had the problem. Victor at the time was nice enough to replace the rackets with the sinking grommets. After, I switched to JS12M for a more flexible shaft. I had one JS12M break within 15 mins of play when the string broke near the tie off. Strung at 27 pounds. They sent it back to Taiwan to get it inspected and told me there was nothing wrong with it. So there was $$$ down the drain. After that I switched to using Li Ning since it was more affordable. Havent had any problems with their products so far. Its a shame that the Jetspeeds had that sinking grommet problem, the JS10 was one of the best rackets I've ever used. Before my sponsorship I did buy my stuff through mybadmintonstore, but knew the drawbacks of no warranty if they have problems. The chances of getting rackets warrantied in America is almost 0% anyways. The process for warrantying rackets is not great for the local branches of the company because they have to send it back to where it was made, where it is inspected.