Has anyone ever had a receiver swapped out [ same model, done by a tech] and noticed a difference in color or PQ? Maybe I'm losing it, but it looks different to me. My original receiver seemed better, both color and pq. Can this vary from receiver to receiver? I never touched my tv settings. I'd appreciate any input. I wonder if I can get my other one back? It was swapped because of a guide issue, and some pixellation,[ which wasn't resolved.] Settings on the receiver are set like the original.