I have a HWS with the OTA adapter and, until recently, have had 100 signal strength on all channels and no issues. Beginning last night, I noticed that I couldn't get ABC 7.1 (Chicago) to tune in and had similar problems with 5.1 and 9.1. Today I'm able to view 5.1, but 9.1 is still cutting out occasionally and 7.1 still won't tune in at all. The strange thing is they are all still showing 100 signal strength in the guide and have always worked perfectly in the past. Does anyone have any idea what could be going on?