The piston part numbers changed back when the piston issue was current, not sure if Triumph changed the design, supplier, or both. Personally, I think there was more to it than just issues with E10 fuels but we will never know the full truth. Other brands are using cast pistons in bikes that make much more horsepower than our Tiger without issues. The revised tunes seem to have less aggressive ignition timing, the low octane "neutered" tunes even more so. My 2008 Tiger suffered the "pinging" issue early on, had the "Brazil" tune installed which is now the lower octane tune. It was noticeably weaker in top end power but I think it saved my pistons. Hamlin installed the revised tune as soon as they were released. It gave back some of the top end rush of the original tune. He also did a compression and leak down test on my bike just before it was off warranty in 2010 just in case. All was good and ten years on, still uses little to no oil between changes.