I also did not heed the warnings and sproinged my detent into the carpet. Rare earth magnet couldn't find it. So I vacuumed with a small handheld. The catchcup is small so when I was done, put the magnet into all the dirt and it found the detent for me. After I had already ordered 2 spare parts kits. Now I have 8 detents, 8 detent springs, 4 buffer retainer pins/springs...:)