USPS Fail

I have to laugh at everyone's dissing of the USPS. FedEx, DHL, and UPS all use the post office to move packages. In fact, FedEx and UPS are the post office's biggest customers. Amazon is 3rd. UPS and FedEx's business model is built around the USPS.
When I carried mail, we were never allowed to leave the office until UPS showed up. If we did, they would recall us to pick up parcels.
I highly doubt anyone at the P/O stole anyone's parts. At least not if you got an empty box. What likely happened is the part was poorly packed and fell into a sorter. At the end of the run, things are dug out. If they can match an item to a package they will. But most ends up in the recycling.
We "used to" have a great postal carrier. The new one either dumps **** on the front porch in plain view, and in the rain or snow, or refuses to toss it under the carport, same distance, and leaves a tag. So I have to go downtown and wast 2 days
Your old carrier likely retired. These new CCA's are paid $10hr and are hurried so bad it's unreal.
The sad truth is, you don't pay for home delivery. The F part of RFD means free. Postage is only from one post office to the next. I know people are going to argue this, but find the law that says you're guaranteed mail delivery to your home. You can't, because it dosen't exist. This was drummed into our heads pretty much every time a contract was due.