[ajserrano]

DO NOT DESTROY THE HEAD/CAP, BE SURE TO TAKE YOUR TIME TO DO THIS PROPERLY, WITH THE RIGHT TOOLS...



...we first machined two non-threaded aluminum flat plugs to securely attached the adjustment cap to the thermostat



and were very careful to secure it to a machinist vise while tightening it. The thermostat can easily slip damaging both flat surfaces.



NO NEED TO OVERTIGHTENT, YOU DON'T NEED TO TORQUE IT DOWN!