This is not the site for a Type A personality!
You need to wait for the right answer. Soon enough the right person will come along,(they always do) and you will get the help you need.
I could give you advice on how to fix your propblem but, this is not my field and you would have wished you had waited!
All I know about horse hair plaster is, if you button it up to tight so the moisture can't get out, you could end up with a real problemif you have allergies. (seen it happen)
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