not sure about other model IVs but mine gets heavy on the stick and slow to roll with more than half flaps . made up a plastic plate with notches for flap detents . makes it a lot easier to keep track of where the flaps are and set trim .
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not sure about other model IVs but mine gets heavy on the stick and slow to roll with more than half flaps . made up a plastic plate with notches for flap detents . makes it a lot easier to keep track of where the flaps are and set trim .