Did you install this yourself, or was it done professionally ?. What many people forget when installing a satellite system is the LNB skew. Where you are, the skew should be around 17 degrees anti-clockwise. What this means is that the LNB should be physically rotated around 17 degrees anti-clockwise from vertical in it’s collar. The collar often had a scale printed on it to guide you when setting the skew. Do check this as in marginal signal areas, it can make a big difference. You can check your dish setrings at