I have had a look at my downstream power levels on my Hub 3.0. I believe that the addition of a 3dB forward path attenuator (or maybe more?) might be needed. I realise my levels are still within the -6 & +10 dBmV band, but surely getting them closer to what I believe the optimal level of 0 dBmV would be beneficial?
Please can I get some guidance on where best to source one from. Are they something that can be posted to me by Virgin, or can I purchase one directly from somewhere? I have found some by searching the internet but they often refer to satellite and not cable. Is there a difference?
Please see screenshots below of my stats for reference:


