Thanks iceberg ! I have some follow-up questions:
1) For #2 question, do you mean you aim the dish at 95, not (91+95)/2=93 ?
2) Does it matter if you aim at 95, then put 2nd LNB on the left of main LNB (as you did), OR aim the dish at 91, then put 2nd LNB on the right of main LNB ?
3)...