Hi Chuck & Cindy.
Congrats on your new Precept!
We took delivery of our 2015 31UL in August 2014 and noticed wind noise from day one. It was tough to nail down, but we think we have it narrowed to the driver's side sliding window latch, even though the noise sometimes seems to be emanating from the front, or even the passenger window.
We isolated it by releasing the window latch and the noise deceased significantly. When fastened, the latch was pushing the sliding windows apart.
The dealer remedied by adjusting the latch and by adding small vent shields to the exterior drip vents on both sides. Although we haven't yet had the chance to verify this fix at 65+ mph, the noise is not there at 50 mph.