OTA signal issue

[Jackblu]

I'm a little new to all the OTA HD stuff but here goes. I have a channel master 3018 antenna on my house. My problem is I can't get cbs locals for squat. I upgraded my antenna from the 3012 and the signal strength got worse. I used to be able to get the signal and have a few picture breakups and dropouts. But now I have nothing. My peak signal is like 15. But I did get a GREAT picture for ahile the day after I put it up. Nothing the day I put it up but the next day it was perfect, after that it went back to junk. Every other channel is great. According to antenna web I'm 29 miles from the cbs signal. My antenna should be more than strong enough to pick it up. There are a couple trees in the way across the street but it's not blocking my abc which is a little farther away in the exact same direction.

Not sure if it matters or not but I'm in Battle Creek Michigan. Any ideas would be greatly appreciated.

[newsposter]

http://www.fcc.gov/fcc-bin/tvq?state=PA&call=&arn=&city=philadelphia&chan=&cha2=69&serv=&type=0&facid=&list=1&dist=&dlat2=&mlat2=&slat2=&dlon2=&mlon2=&slon2=&size=9

that is the page for my Philly DT locals. It shows tower heights and powers HAAT and ERP.

Hit tv query and enter your own area to get your station info. I'm better it has lower power or height or is higher on the UHF, which is harder to receive.