I don't own this model but I remember reading about an airflow issue with a register and I'm thinking it was a Keystone.
I know this is little help to you. Have you tried searching either this sight or RV.net?
What do you mean it seems it was dropped? What type of damage do you see?
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2010 Keystone Hidout
2000 Chevy Silverado 5.3 4:10 gears
Equal-i-zer Hitch
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