ok so I have a Crown tank with .25 coils and my VTC is in SS316 mode, it worked with the very first coil and now wont work with ANY of the replacements that I have bought... it stays at about 7w and says Protection as soon as the button is pressed, it does work in Power mode but its just not as good in power and I have really been happy with TC so far, any advice or tips on getting it to work in TC again?