I am having signal issues on the HD stations. Signal Strengths: 101: High 60's - low 90's (mostly in the 80's) 110: 72-83 119: Low 90's 99c: High 50's - 70's 103ca: mostly 0's 103cb: odd's are 25, evens are 0 A tech was here today and said the tree was blocking the sat. This issue has started in the last 2 weeks. The second image shows the view from the LNB. Do you think that the tree could be blocking the signal so much on that one transponder? I was not home when the tech came (wish I was though).