Ditto, I don't know why anyone would want to get used to a plane that is balanced improperly to the point that trim is all jacked up. Why set it up a bit nose heavy? All that really does is make the plane behave poorly. Many put in that little extra forward CG to make the plane "safer" when in reality they probably just increased their chance of a broken plane due to poorer in flight performance and faster landings. Just set it where it is supposed to be. The manual/plans, assuming they are correct, will get you very close. Then tweak it as needed based on flight performance.