Tear down all parts so you can easilly put KOTKING on them, no need to unsolder
Clean up all surfaces with air blower, brush, or cloth to avoid dust, oil, moist or any other things that cover it
Apply KOTKING to all components such as flight controller, VTX, camera boards evenly and slowly you can use our tiny brush or wood stick to make them even
put them in balanced potition and let them dry for about 15-20 mins, and you can do the same for the low side later
To coat FPV camera you can put KOTKING on camera connector, on camera case especially on connection between case,and FPV camera focus ring
note: please do one side until KOTKING dry and you can do the other side