I hope you enjoy yours as much as I have enjoyed mine for the last 22 years. It has never given any problems.
One thing to note is that you must lock the shaft or it will create more drag than a non-spinning fixed 3-blade prop. If it cannot turn, the blade feather and create almost no drag and takes almost no force to keep it from spinning. On distance races when I need to run the engine to charge the batteries, I tie a single piece of builders string to one of the coupler bolts which holds the prop with the engine running in neutral.
As soon as you release the shaft, it starts to spin in the reverse direction which is why on my Hurth transmission I need to leave it in
forward gear rather than reverse. once it starts to spin, the blades increase the angle of attack and start creating drag which makes it spin faster and create even more drag. It is like sailing with the engine running in gear in reverse.
I know that everything says to shift a Hurth into reverse but Bruntons (and Hurth) will tell you to do the opposite to normal with an auto prop because it freewheels in the opposite direction.