You appear to have all of the frequencies correct and P25 Standard (Digital XT) is the proper system and site type. If the scanner cannot find the control channel, that could be caused by the frequencies in the database being incorrect, which is highly unlikely. If anyone is receiving the Lake County system with the frequencies listed in the database, please feel free to jump in. Are you in Lake County? You could be out of range. The inability to find the control channel is a common indication of simulcast distortion which most likely is the problem. There are several things you can try. Turn on the attenuator. If you reduce the number of towers you receive, that can improve control channel decoding. The 4 towers in the system all transmit the control channel on the same frequency at the same time. The signals from each tower arrive at your scanner at slightly different times which degrades the ability of the scanner to properly decode the control channel. If you are using a rooftop antenna, disconnect it and use the scanner mounted antenna. A directional antenna pointed at one of the towers can help. You can also reorient and change the length of the scanner mounted antenna and move the scanner around the room. Simulcast distortion is very location specific. You may find a sweet spot where the scanner will work. Eliminate the voice frequencies and use only the control channel and 3 alternate frequencies. If you lose the control channel, the scanner will not have to search through all of the voice frequencies to find it again. All of the frequency information is carried on the control channel of a P25 system, so the voice frequencies are not necessary. I would also turn off the digital AGC. The AGC action can increase garbled audio problems when you have simulcast issues. Let me know if you have any luck.