Mixer Injection Level Pot

Yellow arrow points to the Mixer Injection Level potentiometer. It is located right above the FT50A-75 core used as an RF Choke for the VFO.

Be careful when melting wax on the RF Choke, so that you don't get any on the PC mount pot like I did! The RF Choke should be completely covered with wax to keep it from being sensitive to temperature changes.