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				 think about it 
 kilz is to  kill the  knots showing thru the paint  on number 2 pine boards or to cover other wall stains or  old colors...
 
 not to seal clean wood...   so it has to be thick to do that....
 
 your using a  sealer is to give a bonding agent to the plug and to prevent the plug as raw wood from s#^^^^^&g up to much of your colored paint your trying to put on the plug....    as well as  sealing it from saltwater damage...
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