[Supras] Thermostat Leak

[b2nice84 at aol.com]

I have a 91 turbo manual.  I have a question for all of you if you can help me.
I have a leak coming from the thermostat housing.  I have always has a small leak all the time.  I cleaned it the best I can and I know the ring gasket is okay.  But when cleaning it I noticed some dips her and there on the mating surfaces of the thermostat housing (dips don't look bad and are like pin hole size).  I have also tried some liquid gasket maker on the housing along with the ring gasket on the thermostat.  
 
Is there anything I can do to stop the leaking?  Has anyone else had this problem?  
 
Thanks in advance,
Brandon
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