Is anyone else having a rash of "mechanical" delays with their trunk aircraft? We've had 4 or 5 in the past couple of months. Every time it's been on a Friday. I have customers who are starting to mock me when they ask why their Priority packages are late and I tell them it was a "mechanical" delay. It's kind of funny listening to them question the reliability of our aircraft, how many drinks the pilots had the night before and whether or not people show up for work at the Hub on Fridays. I just smile and tell them I'm sure "mechanical" covers everything weather delays doesn't cover.