I have an HR 24 and slimline 5 LNB. I've noticed for the past two years that from October to May, I lose my almost all of my HD channels. I've had two installers come out and reposition the dish to no avail. Once May kicks in, everything is great. I share my service with my cousin who lives in Cleveland. I'm located in Oakville ON. I'm wondering if it's the change in the Earth's rotation which happens as we progress thru the year and I lose sight of the HD sats. SD is fine. Here are pics of my signal strength and meter Any ideas or fixes? The dish in anchored into the upper level of my home with clear line of sight to the sky.