Richard, thanks for getting me untangled. I am studying for tech, I was a novice back in 1980, so relearning things. I asked about the 300 Ohm pair in series because I can find 300 Ohm? Axial Ceramic Cement Power Resistor 5W easily but not 600 Ohm. ?Thanks for clearing up the 5 per cent vs 10 per cent tolerances. ?
Richard Oscoda