I finally ordered a Ric-O-Sound kit for my 4003 -now that I have two amps, I want to try my Ric in stereo mode. I have a concern though that my bridge pickup seems to sound weak. Is this normal (when NOT using the Ric-O-Sound kit)? Should I raise the level of this rear PU? Will it "kick in" as it should when I get the kit? Thanks!