Ask Burgess and Yamaha. Links provided, no Blah-blah, flame bates, psychological blocks and fanboyism, apart from the usual trolls that is.
"When Valentino and I arrived in 2004. All we had to do was go changing things on the bike one by one and give engineers the feedback for that may develop l to bike in the right direction . This is one reason why Yamaha has re-signing Valentino. Because Yamaha are not sure with the development of the M1 which has now been made for Lorenzo and Spies".
Yes, the bike is going very well but the Japanese, as I understand it, they want a second opinion besides Lorenzo and Spies, to stay ahead of its rivals.
They know they do not have all the information they should on the M1, know Yamaha rider Valentino is a very sensitive when it comes to understand and tune a bike , while Jorge is able to go fast with any bike.
Yamaha also brought another very big trump card to the 2004 season by signing Valentino Rossi. Rossi was not only a super-fast rider but also a sharp contributor in machine development, qualities that had won him the nickname "The Doctor." Rossi would prove that reputation by bringing out more than 100% of the new YZR-M1's potential in winning the pole position in the opening round of the 2004 season and going on to a pole-to-checkered victory in his debut race with Yamaha.
His riding style was characterized by skillfully controlled tire slides