I think part of that is because they have so many rules at the track in the pits these days. They have added more timing lines everywhere, have cameras watching everybodies moves, penalties for having your foot down too soon, uncontrolled tire is a joke, they loosened it up a bit this year but still pretty over the top, they reduced the number of pit crews doing their jobs, all this has increased the mistakes for everybody but especially for the younger drivers who have never had to deal with that before. a lot of knocking the rust off with pit stop mistakes so far this year. I don't know what has got into Hamlin, no speeding penalties so far. They might have rigged up his dash lights or something.