Duke2.6: How do you remove the fan? We removed the body-colored center brace and expected the fan to lift out after unbolting, but could not do so. It's like changing the headlight bulbs--once you understand the trick to the mechanism, it's easy. Until then, it seems impossible. Also, do both fans have to be removed at the same time or are they completely separate units in terms of their mounting?

Thanks again for everyone's input. Will let you know if any of the suggestions help identify the problem.