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A big +1 right above.

Plus a big fat untraceable moldy smell for all the poor folks who never find out about the famous "Missing Elbow".
 

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How do we come about fixing this issue? Cuz I would like to know to prevent this as well?
The drain hole out the firewall often lacks/loses the 5/8" rubber rt. angle elbow and condensate wicks back in under driving airflow pressure into the pan and overflows inside. Best to fit a pc. of plastic tube in the other end pointing down.

For REALLY unlucky guys the drain pan is the culprit:

And there's even word the cowl can leak - but about 1/2% rare.
 
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