05-16-2018, 07:10 AM
RE: Something's gone wrong.
Thanks for all of the suggestions. Although invisible (at least with bifocals), some sort of accretion apparently had gradually clogged the diffusers of the exhaust vents. A good scrub with a toothbrush and Ivory Liquid followed by a thorough hot water rinse did the trick, and is now part of my weekly maintenance schedule; good as new. Thanks all.