Air ducts are usually “balanced” to provide airflow at each register. In order to get flow from the last register in line, the duct gets smaller the further you are from the source. That theory might be giving too much credit to Keystone, so I would look into the connections at the furnace to be sure you are getting all the flow you expect. There are also “ducts” into the belly area that could be flowing too much air underneath
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Rob & Amy
2019 Passport 240BH SL (current)
2024 Cougar 29BHL (was on order, Keystone delayed, cancelled order, exploring options)
2022 Ford F250 7.3L Godzilla Crew Cab FX4
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