Next season he will be, by having his garage at the wrong end of the pits. (don't ask me why, but apparently its very important!)
first off the garage are bigger one end tan the other
also if 2 drivers go in at same time the guy who is furthest along the pit lane has advantage of seeing the car behind pulling away
so can sneak out in front (with a good team behind the pit)
with mclaren in the worst garage there rivals have a number of seconds to get there car out ahead (remember no overtaking in the pit lane)