Thanks for the response, Cal. Here's my report and current set up:I can't see how grounding your antenna should have anything to do with this at all. Without seeing your Rabbitears report we have no idea how strong your stations actually are. Having said all that, it's common for lightning to cause dropouts as the RF generated by lightning can easily be stronger than your stations. The lower the frequency the worse the problem. High VHF is worse than UHF and low VHF is worst than high VHF.
None of my stations are very strong and my one high VHF station is easily disrupted by lightning up to 100 miles away if it's in the same direction as the station. UHF is not quite so sensitive.
My "run" goes like this: Danny Hodges "Ultimate" Antenna, 6 ft cable run to Antenna's Direct UHF/VHF combiner; Stellar Labs VHF 2476 6 ft run to the same combiner; 3 ft cable run from combiner to kitz500preamp.
15 ft run from kitz preamp to grounding block; 20 ft run from grounding block into kitz power adapter.
Despite the scary-looking report, I pick up WBRE and WYOU (11 and 12) fairly strongly off of the Stellar Labs. My Tivo signal strength is typically 67-72.
With the Ultimate Antenna, I pick up WNEP/WVIA RF 21 and WOLF RF 22 from Scranton off the back. Signal strength is 42-55 depending on the atmosphere. These are the two I see some picture breakups introduced.
My Altoona-Johnstown stations to the southwest I pick up fine with signal strength of 47 for WPSU RF15 and 60-67 for WJAC RF 26, WATM RF 31 and WTAJ RF 24. However I still some picture breakups on RF 26 during storms.