Thermostat gasket leaking AGAIN!!!!

@ H22A4 - I have scraped, with a plastic razor, and then used 600 grit paper on it both times, was nice and shiny, dry surface

@Dartsun - yes stock housing

i will look into another housing, but this one didn't seem to be leaking before i removed it, but i only had the car running for a few minutes a few times. so i am not sure what I did wrong, or it is just that temperamental about sealing up? i have changed a thermostat before, not this car but another 318 '70, although it was some years ago.... and do not recall the gasket having a sticky side so i was thinking maybe the gasket just sucked, lol