After installing the B757 and updating the B777, the B777 has a very strong tendency to the left when taxiing and taking off, although my rudder is centered and there is no wind. I cannot manage to taxi straight forward for 2 inches on the taxiway.Do you think that this has anything to do with the new 757??

Im sorry, there must have been something wrong with the left engine temporarily. It works fine now again. I was mislead by the fact that I used the B777 for the first time after installing the B757. So I thought it had something to do with the B757.