Thanks very much for your help. My apologies for the extremely delayed response.
TL;DR - Turns out antenna position, horizontal rotation (parallel to ground) and an unnecessary 3-way coax splitter in my apartment were all causing less than ideal reception. The adjustments now bring in a great and more importantly consistent signal.
Tim, so I should have more clearly stated the set up at the get go. From the antenna, about 80' on the top of my apartment building, coax runs about 100ft to a grounding block in my garage. From there I use a coax splitter (not amp'd) to send the signal to 4 units total. To my unit the TOTAL line run from antenna on the roof to my wall jack is probably about 120'. At that point I found out that the coax was then split AGAIN behind the wall in my apartment before going to all the wall jacks. I talk more about that below but basically I took that out as it's not needed and that seemed to help! I'm using a Tablo for viewing in my unit.
Tower Guy/rabbit73, I tried the attenuator as it seems that you guys were noticing the strong signals I'm getting. That didn't make a noticeable difference unfortunately.
ADTech, this was SUPER informative. I'm somewhat technical, but a noob when it comes to antennas so the links you provided were awesome. I knew from basic school stuff that there was a chance I was "underneath" the signal of the tower, but that doc and your basic equation REALLY illustrates that I could be getting bupkis when it comes to signal power.
ALLLLL that being said I was able to adjust the antenna's position and lateral rotation to greatly improve my signal reception. I also found that the cable coming from the garage to my apartment was split 3 ways before going off to various wall jacks in my place. So, took that out of the equation and boom now I'm getting consistent reception across all my channels (even the potentially much lowered KPIX signal)!
Thanks again for the help, I'll pay it forward!