As I mentioned in another thread, I read an article where Nicky explained what happened to Duc. They were using a different frame than the Japaneese bikes and were tuning the bike through the custom tires that were available to them. Once GP went to the "Spec" tires, the tires chosen we the ones that worked best for the majority of the bikes on the paddock (not Duc). That left Duc with tires that did not work on their bike, and also eliminated the usual way that they used to tune the chassis. They have now redesigned the entire chassis and hope to convert to it next year. Recent tests have shown that the current chassis is still faster, although the new frame promises to more adjustable by means other than tires.