Why make it complicated when you could give simple answers? I really don't get it, am I bothering you?
Wouldn't your dish perform better on Cband if the lnb was centered on the main focus of your dish? As before you said it didn't make much difference. I understand that you can't have 3 dishes for each band / polarisation but if you could just simply answer that I would appreciate, as you said it didn't make much difference I'm just trying to understand that.