I'm trying to get some use out of my Rhythm 2 channel. When I set the tone controls for a good clean sound, R2 is very muddy and dark. Is there anyway to clean up the R2 stage? Is there a specific tube side that is dedicated to this channel? Maybe a cathode cap value change? I really don't need a lot of gain in that channel..just a bump and a way to loose the mud. I have tried different tubes in V2 as well..no help. I do have the R2 volume mod as well.