I am at the point of adding the capacitors, Q3 , P1, RP3 , R13 and the MYSTERY Rbias 10K resistor that I am having trouble locating . Can anyone explain to me what this part looks like. I know it is part of the KSB2 option for the K2. The K2 manual does advise to complete this KSB2 "section" but I am confused with the Rbias. Thanks, Steve KQ4UB