I defy your post with my 2 most difficult installations!!
Coolit ECO A.L.C
It was a nightmare... it took several hours to get the cooler mounted onto the case properly because of the very tight fit, the ECO A.L.C uses the same annoying pins as stock Intel HSF which would not tighten for the life of me and there was a lot of resistance when trying to lock the CPU into the socket as if it were going to break.
Athlon II X2 215
CM Hyper TX3
CM Elite 343
The CPU was OEM and several of the pins were slanted and wouldn't align with the socket properly. I used a knife to straighten them, I was constantly worried I'd break a pin off, and it didn't help I was using a Kershaw Storm, in hindsight I probably should have hunted down a sewing kit but it was $30 and the knife was right there. Scariest CPU install ever.