8x1 channels seems really weird. I would call in to make sure your account is properly provisioned.
The typical channel configurations were 4x1 for older plans with SMCD3GN, 8x4 for Cisco DPC3825 and Hitron CGN2 current plans and 8x3 or 9x3 for Hitron CGN3 for express to extreme plus packages. For a variety of ultimate packages on CGN3 depending on the location you can get either 16x3 or 20x3
The typical channel configurations were 4x1 for older plans with SMCD3GN, 8x4 for Cisco DPC3825 and Hitron CGN2 current plans and 8x3 or 9x3 for Hitron CGN3 for express to extreme plus packages. For a variety of ultimate packages on CGN3 depending on the location you can get either 16x3 or 20x3