What exactly do you want people to show you? I learned right here and trial and error, lots of errors!

Go to newegg.com or some online store and browse through their heatsinks. If you don't have an old computer laying around already. Haven't used heatsinks myself yet, boards are still in stock locations with fans blowing on them. Not the top either, the part that connects directly to the transistors. Haven't blown a board yet. A miracle for me!

Always draw a detailed wiring diagram of the tank before taking anything apart, lower hull, upper hull and turret. That way you won't wire up something backward and melt a wire or blow something up and you can improve or add to the design. Do you have spare smokers laying around? Those little junctions are more compact then I've seen others use and FREE!