A few years ago, I had an $800 third-party CPU upgrade card in my Powerbook 2400C. One day, this Powerbook seemed to develop a bad Logic Board, so I sent it to AppleCare for repairs, clearly indicating the CPU upgrade. They replaced both the logic board and the CPU card. When I got my powerbook back and found that it was slow as a turtle, I called them. After a couple days they reported that my CPU upgrade card had been lost. I got reimbursed for it after writing a carefully-worded 2-page letter, with documentation, to some department in Cupertino, CA. I'm pretty sure the department was called "Customer Relations". Try them.