We will insure that the schedule is kept, the defect identified and rectified before delivery (see the benefit of Flight Test).
After all, why would a brand-new aircraft come out of the factory with impending defects? It is covered under the warranty, right?
Indeed, the warranty will cover any defects you may experience upon aircraft delivery but will not cover the opportunity cost and the frustration you face for having your aircraft in maintenance instead of flying around the world.
Delays cost money.
Defects cost money.