Capt369 Your welcome. I would stick with the stock cord if it were me and put my money into some other upgrade. I had the same experience with my conrad johnson amp/pre-amp. That being I didn't hear any difference by upgrading the power cord from the stock supplied unit. But I know how it is to want to tweak things.
The only place I heard a discernable improvement in a power cord upgrade was on my cd player (highly modded SCD-1). The improvement was a lowered noise floor (much blacker background).
Great Integrated by the way. I really enjoy mine.
Chuck