I am looking in the C-band FAQ and it see a refernece to a focal finder for centering the scalar ring/LNB on a cband dish. I am having a heckuva time locking some TP's with my new Geosat Pro Dual LNB that I never had with my old co-rotor/25 degree LNB setup. When I installed the LNB I just put the 'ol calibrated eyeball on it and tightened it. Anyone ever made a homebrew focal finder? See below for what I am talking about.