John- Per the service visit & the info you found on the web (did you confirm it against the furnace rating label?) the furnace performance is within spec. >>Should I worry about it?
Even better visit a supplier and ask questions face to face, if travelling is not a problem.
Sam, FWIW, Steve is on vacation, starting with the AHR show in Dallas, then a road trip thru several states to visit family & friends. We took him out for dinner last night.....
I visit here to learn and sometimes have some fun. DIMwit
Come visit http://www.egetitfree.com/category/free-cleaning-and-household-products/ today and see all the free stuff you can get!
They visit there regularly to inspect the furnaces!
But yet if you visit a HD when there is a district manager in town waking the floor you have someone asking you every 2 seconds if they can help you. Amazing.
Nice that your friends enjoyed the visit, and saw the car silo. Arlo wasn't that far wrong.
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wrote A visit to Planing Notes - Fettling a Cast Iron Plane will reveal some information that supports Ron's view. Maybe you could spend the considerable saving on some more tools? Jeff G