2 different skews needed on one satellite?

[Mr Tony]

OK this is odd and hopefully someone can help out

Have the 6 foot Fortec dish on the deck aimed at G4/G16...get everything pretty good
nets...65
WHT...90
ABC HD...60
My.....75

but I cant lock KCWY (NBC 13)......now here is where it gets weird

if I skew the LNB (SatAv dual C-Band) from where it should be (+5) to say -5 then I get KCWY at a 30 quality but the rest are hindered
nets...45
WHY...90 (OK not everything is hindered)
ABC HD...15
My....40
KCWY...30

why would I need 2 different skews on one satellite (heck one polarity)? It is due to the dish size?
I moved the LNB back to where it was so the nets come in better

 

[tvropro]

I would think it's because the dish is getting adjacent satellite interference because of it's size.

 

[Anole]

. . . and as much as I am running away from corotors as fast as I can . . .
that is a good reason to have one. -

 

[Mr Tony]

oh well....I guess I can live without KCWY

 

[truckracer]

God bless servo controlled feedhorns-LOL.
I have not ran into that one yet. I probably never noticed.