Just finishing my K1-4 and got to Chapter 9, Alignment and Test, Part II. Most of my voltage readings were within the bands listed as acceptable, but some where slightly below the lower edge. Test Point DC Voltage Actual J7 pin 1 5.1-6.7 5.04 U9 pin 3 6.0-7.0 5.6 U9 pin 6 6.0-7.0 5.6 U9 pin 7 12-14 11.2 Power is from a lantern battery delivering 11.9v Is this anything to worry about? Bob Greenwalt