Dobbs,
First, I'd make sure you were running the latest connector pack in case this normalization has been added in a new revision of the connector.
SolarWinds Knowledge Base :: Applying a LEM Connector Update Package
As of today, it looks like a connector pack was published...today! It looks like the IIS 8.5 connector is on revision 29. Is that newer than what you have?
If updating the connectors doesn't help, you'll need to open a support ticket to put in a connector improvement ticket.