Hi Bruce--I have the same set up--DL on the GA. Haven't flown it yet as weather has been lousy. Like you, it's new plane/engine. I have a 22x8 MA woody on it. If too much rpm will go to the Vess 22B. I ran a tank full thru and did not have much vibration at all. Haven't opened up the throttle all the way yet. Let me know how you like the plane.