I have debris in the cabin air intake system in a 1996 Honda Accord. It does not have a cabin air filter. I have removed the blower motor and removed very little debris. The area the the condensation drains through becomes clogged and the condensation builds up and runs inside on the cabin floor. I have used an air hose to blow debris away and open it up, but only on a temporary basis. How can I find an area to open and remove the accumulated debris?