I, too, hate it when STUPID stuff happens. Bought a cable pulley from Harbour Freight to add to my long cable used for pulling tree tops with. The hook that came with it was stupid small. So I took it apart and brought the bolt and spacer to the hardware store to get a bigger hook. Using the aforementioned parts to make sure the bigger hook would work. Spent the rest of the day running other errands. Got home, started to put the pulley back together only to discover the spacer had found a black hole somewhere in town. So, another trip to the hardware store to locate something I could use as a spacer.
These things are really aggravating.
Much like a sharp stick to the eye (or nose).