Sounds like plane still has a number of gremlins residing in the airframe and engines.
First and foremost... be safe, and don't take any chances.
You may want to look up the Cessna Rep. in the area.
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An alternative would be to look up a Teledyne Rep. too, as it is their engine on the airframe.
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You should be able to make some progress there.
Good luck with the Utilitwin... great plane to fly
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