kianfar: In at least 6 posts above, people have told you to adjust the skew of the LNB. You must do that. It looks very awkward to reach the LNB, but until you adjust that, you will never have optimum signal strength.
Someone had asked for pictures of what the dish is pointing. It's pointing toward a deck! Hopefully this helps!
In this case you could, with a chainsaw. Looks too close to the building and decks anyway..You can't fight mother nature