I used to get good FM Broadcast reception on my BCD536HP scanner. Then, after a few months, FM reception would start out sounding very "fuzzy" and after a few minutes would suddenly become crystal clear. As time went by, the length of time it took to become clear lengthened to many minutes. After the last firmware/database update, I can no longer get clear FM reception, no matter how long I wait. I've verified that the 88.0 band is set to FMB and the step to 100KHz. Does anyone have any idea what the problem might be? Since I have at various times fiddled with various parameters, it is possible I've caused the problem myself, but I cannot figure out what setting error would cause this phenomenon.