I have a tank Crossing box mod and when i purchased it the guy in the vape shop said i had to put grease between the connector and the firing button or it could get to hot and fry the switch. He wasnt very specific on what kind of grease, he just said its in a tube at o reillys. All they had in a tube was break grease and my gut tells me thats not a very good idea. Any suggestions or reccomendations for what to actually purchase?