Give you a heads up to be aware of when you get the Balance master mounted. You might notice some chatter at start up and at shut down and even at real low RPM until the mercury finds its place.
First off, due to spring weather in Idaho, I was not able to fly for 31 straight days! AFTER installing the BalanceMaster on the Rotax. One day was good, and that was the day I had to work, good craning weather is also good flying weather it turns out. So, I was rusty, and this was also going to be my first takeoff of the year on my summertime runway, though still on the wheel skis. Put these factors all together, and an approaching rain storm (but a few hours away) and it took me a moment during my runup to remember this was the first time starting since I installed the balancer, THEN I noticed the engine had a lope to it, not a miss but something was different. After checking everything out I decided to just go for it, and the takeoff was normal enough. Then I forgot about the lope for a few minutes, while I transitioned to the skis and messed with the Sirius radio, my usual post takeoff routine.
THEN I realized the lope was gone, and it occurred to me that maybe the quicksilver needed a bit of time to do it's thing. My crane truck wheels do the same, which also have a similar product on the wheels, it takes just a bit to smooth out then it is SMOOTH. Nonetheless, it was gratifying to see flyrite's above quote stating that this was normal and to be expected. Was it smoother, yes. But I only flew for .7 hrs, but so far so good.
I have had the current Prince prop on for 997 hours, in 5 years, mostly dirt strips and off airport, though it continues to look pristine. Point being, I have no idea if it is still balanced, or maybe a bit off and I've just gotten used to it, whatever, it is smoother now. I'm trying real hard not let the placebo effect make me think it's smoother just because I spent the money, but I am a believer in the concept, and it wasn't that much money, so I am pleased and am looking forward to more time on it, and not with another 31 day layoff which was distracting.