Welcome to the forum, Kaptkimbo:
Please post a link to your tvfool report so that we can see what the signals look like at your location. Go here (>> Click HERE <<) and enter your exact address, which will not show:
http://www.tvfool.com/index.php?opti...tpage&Itemid=1
A generic report for Middleville, MI would look like this, but we need a more accurate report to make a good analysis because you might have some strong signals that would overload a preamp:
http://www.tvfool.com/?option=com_wr...8e03040b7c8563
Which CM7778 is it, the old one with separate inputs for VHF and UHF, or the new 7778 with just one combined input? See attachments.