I have a 4.3 Mercrusier. I am getting an occasional warning alarm that I have traced to the thermostat sensor. The manual says to install the gasket (with the rivets) using perfect seal. Which I did. I am pretty sure that it is the perfect seal that is compromising the conductivity of those rivets. Trouble is, how do you apply the sealant without it getting on those rivets. I am kinda leaning towards installing it without any sealant. Any suggestions?