I've put together a Give II (2018 Version) and sadly it is not working properly. It only puts out a ~1Hz wave. Pulse width pot is working alright. Tuning pots are not having any effect on the pitch. I've resoldered everything and checked resistor and capacitor values and ICs, diodes and transistors. Now I'm out of options. Are there schematics anywhere? Or any idea, what could be wrong?