In Home Assistant, with multiple Russound controllers, there is response lag for zones not on first controller

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Thank you everyone for writing and maintaining the Russound RNET interface. I am new to Home Assistant and have acquired some old Russound boxes. I have them linked in HA after modifying the media_payer.py in a custom_components sub folder to cope with multiple controllers. Everything works, however, I notice a significant lag for actions, specifically Power Off, on zones connected to my second controller. I think the issue is that the response message signature, built in function get_zone_info, with this line:
resp_msg_signature = self.create_response_signature("04 02 00 @zz 07", zone)
assumes a controller id value of 00 and should be amended to be along these lines
resp_msg_signature = self.create_response_signature("70 @cc 00 7F 00 00 04 02 00 @zz 07", zone, controller)
to take into account the controller Id. And, obviously, with a knock on change required to
create_response_signature(self, string_message, zone)
to become something like (please forgive my Python):
`
def create_response_signature(self, string_message, zone, controller):
""" Basic helper function to keep code clean for defining a response message signature """

    zz = ''
    if zone is not None:
        zz = hex(int(zone)-1).replace('0x', '')  # RNET requires zone value to be zero based
    string_message = string_message.replace('@zz', zz)  # Replace zone parameter
    cc = hex(int(controller)-1).replace('0x', '')  # RNET requires controller value to be zero based
    string_message = string_message.replace('@cc', cc)  # Replace controller parameter
    return string_message

`
Honestly, I'm guessing this as I'm actually not sure how to test my proposal. Can I just copy Russound.py in to my custom_components folder but then how do I reference that version from the your original one in media_player.py? I'm new to Python and still have a long learning curve to climb.

Many thanks Richard

I've managed to get a test setup and realised it was more complicated and have updated my issue, however, I douibt that my initial assertion is correct. Can anyone tell me how I can switch to debug mode/see the debug logger messages?