After I replaced the coolant I replaced the thermostat and gasket and it blew the gasket as soon as it opened. Does the rubber gasket go around the thermostat or does is get in grove on engine side with thermostat over it then housing? The thermostat came from the dealer and it is very long. It seams to bottom out in the engine housing no matter which way i turn it. It appears to bottom out and compress the spring a little as you tighten it. Does it matter how ithe thermostat sets in teh engine housing or am i just paranoid?