Originally posted by lammie200 Where did you get your stuff?
Adorama and B&H; Pentax replaced the K-5 with the stains, which then had the back focus and the mirror flops. I highly recommend Adorama and esp. B&H, they are very reputable and with great customer service.
Also, i just remember that the first copy I got from the DA* 50-135 had a fairly large lint piece trapped behind the back element. B&H replaced it with shipping labels and fast turn around. And, a DA 100 Macro had a focus ring that didn't turn smoothly. Adorama replaced that one. I think the ball clearly is in Pentax' court to avoid these type of things. The last two issues with the lenses were obvious upon unpacking of the lenses, they should have been caught in the final inspection by the manufacturer. The replacement lenses were fine.
I really don't want to get into Pentax bashing, I like the camera and the lenses and the overall system.