No John, fortunately nothing at all like the problems they had with the V-22. The Osprey with its 6,150 SHP Rolls Royce AE1107C engines vent the exhaust directly out the bottom of the nacelle when in the upright position. The design of the PT6s with the exhaust circulated back up to the front of the engine and then out just happen to give it an advantage of being raised further above the helideck with the nacelles in the upright position.
