My OEM 3500+ had come out of its package and was freely boucing around the shipping box when I recieved it (imagine the opening scene of Ace Ventura). Two or three of the outermost row pins were bent, with extra bent pins near the corners. There were also bent pins randomly dispersed throughout the chip.
I spent the better part of 2 hours painstakingly bending the pins back with a pair of tweezers and my thumbnail. At the end, I used a needle to straighten entire rows of pins. I gently pushed the processor into the socket, and it was no go, so instead of forcing it, i took another look and found some pins that had bent back near the corners where i was holding the proc. After a few more minutes of fussing with the needle, the chip went in, but it didn't "slide in"; it snapped in, kinda like a static-friction type thing. You know, when you're pushing a box across the floor, at first you apply strong pressure and nothing happens, but once you overcome static friction, the box begins to slide fast with less pressure applied. Maybe that was a convoluted way of stating it, but my processor was more like that when i inserted it. And to answer your question (finally) the mobo recognized the procesor fine on the first try.
If I could make any suggestion, it would be to get a magnifying glass, because I don't have any vision problems and yet my eyes had some trouble being able to focus on the pins - especially pins surrounded on all sides by other pins. Wow i just said pins a lot. pins pins pins