Downstream channels won't all lock
In the last month I've had the problem where downstream channels 2-10 (out of 16) won't lock. Nothing has changed in the inside wiring and I made sure everything was still connected tight. No storms or anything else to mess up the wire from the pole. I've noticed the locked channels are all around 381 MHz, while the channels that don't lock are around 800 MHz. The modem is a Motorola 7550. Re-setting/unplugging the modem doesn't help. I used the Customer Service chat and they re-set the modem and said it looked fine on their end. Any ideas why it would suddenly be doing this?