I've used the Vans prop pitch tool on every ground adjustable prop I set - no matter what the manufacturer or blade configuration along with a small digital level. Since I don't keep the battery in the level it gets calibrated each time I use it. I consistently see 0.1 degree or less between blades.
See thread meltdown
for the gory details of not paying attention to the parameters set forth by Rotax. You can't comment on the thread since the Vans employees closed it - too much heat I guess.
The Vans posters on this forum would have you believe that something other than the parameters outlined in SL912-016 were in play here but that's simply not the case. It failed exactly as Rotax said it would given the parameters in that service letter.
In my situation every parameter in that SL was in play for an inflight engine failure.
I run about 1 degree less bite from the "recommended" pitch in the prop now and it sees just over 5200 on roll out so I feel good about that. Still see numbers in the yellow for airspeed and the bird is so light that any turbulence really pushes it around so I'm good.
It is the owner / operators responsibility to ensure that the engine operates within the parameters of the engine manufactures specification. Ignoring Rotax' "recommendations" could be costly.
And don't get me started on what it takes to work with Rotax. It took 9 months to reimburse me the $4200 for the pushrod debacle on the new engine.