thermostat housing gasket

Im having the same issue. I used a ??? Gasket that had adhesive on one side. Used gasket adhesive i have been using for years. Dang thing seeps when cold holds pressure when hot. Im going to try the following next.
rtv, gasket, rtv, BUT put rtv on and let it setup for an hour or more. Than assemble. I recall reading someware that when ysing rtv you need to let it setup a bit before assembly. Then sfter the setup time tighten. Im sure we have all seen gaskets squeeze out with rtv on them. I do like the silicone gasket. Might try that. Notice the inch pounds and dry placement