So i swapped out the temp sensor housing to the 2000 contour housing to fix the freeze plug leak, well that leak is fixed but now the new housing is leaking! How tight am i supposed to toghten the three forward facing bolts? they seem pretty tight but I'm still getting a leak at the bottom bolt... do i need to seal it with a rtv of some sort? New thermostat oring? I put in a new 180* temp and oring about 500 miles ago so it shouldn't be bad so this confuses me.