Having helped in the development of a generation of training simulators, let me make a carefully thought-out comment. Take GREAT care with procedures developed from flying a training sim. There is absolutely no reason to believe there is a connection between the oscillations as programmed by the sim engineer and the real cause of oscillations as experienced in the real aircraft. In other words, a sim might make oscillations by imposing them on top of the model of the engine, while the real aircraft experiences them from some internal imbalance that the sim might not at all replicate. Therefore, your home-grown procedure might fix the sim's symptoms, but be totally invalid in the real world.
Remember a simple rule: Training sims are designed to program YOU, they are NOT designed to replicate the real aircraft, in spite of pilot mythology otherwise.
Also, anyone who wants to develop flight manual procedures for a hobby should be forced to have their families fly in airliners flown by amateur pilots who figured out how to fly their aircraft by trial and error. This does not say that the procedure discussed here is invalid, but it does say that only an official endorsement from the manufacturer should be used to change the way we fly our aircraft. Anything else is as valid as Rush Limbaugh's sage advice.