Check Engine Light post EGR Valve Replacement

What is your question?

My check engine light came on last fall and local auto store indicated that it was EGR valve. I had the part replaced at a NTB in Janauary. The check engine light has come back on, so I took the care back to Auto Zone to do a scan and they provided me with the code 1259. The local Acura dealer told me that the ports probably need to be cleaned. After reading on this site about the need to have an experienced tech work on these issues - I don't want to go back to NTB. Is there any potential that damage was done to the valve? How do i find a qualified technican?