I have a 9900 that is around 4 years old and I lost around 30% of the LK channel and has now increased to about 50% a few months ago. I was going to convert to Piezography but I just don't have the need for a printer that will only print B&W. I like the idea but it is not practical for me. I am getting ready to install all the carts with piezoflush to store the machine. So that means I have a complete set of carts. I am in Baltimore so pick up will be required. I will listen to any any offers.