T61 Parts Availability - motherboards

[mixz1]

I have 2 questions for United States T61 owners who have had to replace their motherboards due to NVIDIA GPU failures:

How long did it take to turn your machine around from the repair depot?
Was the repair satisfactory or did you find faults after the machine was retuned to you.?

My 6459 CTO is now in its fifth week away. It was first repaired twice at the local repair facility in Cancun, Mexico. Both times the replacement motherboards were defective; no TrackPont and then no 1394 port. According to the local repair facility, they were then instructed to send the computer to Lenovo's main Mexican facility in Monterrey, where it has languished for three weeks.

I received word yesterday that the Monterrey facility is still waiting for a motherboard to be shipped, maybe next week. Meanwhile, my extended warranty has eaten a month of its life sitting on a repair bench.

How can a repair facility stock "new" motherboards that are defective out of the box? How can a facility not receive timely shipments of parts?

What I do know is that when and if I ever receive this computer back, it having been the most troublesome ThinkPad I have ever owned, and I go back to the 701C, it will be the last ThinkPad I ever buy.