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BackPassed on, we want to socket the timing capacitors. \*\* Use only four (4) potentiometers, either 9 mm vertical board mount OR: | | | D6, D7 | 2 | 4.7k | Resistor | | | R16, R18, R26 | 3 | 2N3904 | Small Signal NPN Transistor, TO-92"/>