Do high SNR levels on Verizon FiOS affect Roamio Picture Quality

I'm having a problem with a few stations being pixelated here and there. Cinamax is one of them. The DVR diagnostic page shows all the stations have a 39 - 40 SNR with 97-100% quality. Most of the other stations are ridiculously clear and this only seems to affect a few. From the other posts I've read this has to do with the cable card model # (I have the newest one) and that was fixed with a software update. Do I still need to attenuate the SNR lower? If so, what level seems to work for everyone?



Also, if anyone has any extra of these lying around they don't need I'd be more then happy to take them off your hands. :)



Thanks in advance for the help.



~Lee