Poor boy. Several quotes from Yamaha Racing about Rossi "outstanding bike set up and development skills" are not enough to shut this crap hole under your nose?
Can't you see that your pathologic insistence on saying the opposite to those who know just demonstrate how deeply damaged you are?
Not to mention education: So let me explain to you how it's done:
First you have engineers designing the bikes around pilot requirements, in the order; conceptual, structural and aerodynamic design.
Second EVERY single factory has a dedicated TEST rider.
Third, when they are lucky, their number one is also developing the bike, otherwise said he will participate to further tests (like today) on top of racing them and get the bike to the limit, tell the team what is wrong or good with it, and require changes in one direction or the other.
When the pilot technical direction is not good enough they are in trouble as is Yamaha since Lorenzo took over the no1.
The simple fact that you are not educated enough to tell the difference between the job of an engineer, a mechanic or a pilot is striking, you're as remote to reality as the asteroid belt is from hearth, and your dislike of Rossi is not going to help you figuring your head from your @ss.