Has anyone here that owns this amp done this mod? I read that it can effect the boost channel and I don't want to mess w/ that. I would like to sweeten the normal channel however because even though I don't really consider that channel very clean, I do like the natural overdrive that it can produce. Right now I find I have to pretty much kill the treble to have it usable at all. Anyone who owns/has owned this amp what are your thoughts on this mod please.