Goirish, The Sig balancer is fine and I have one along with some others. If your airplane flew badly after using the balancer it is not the balancers fault it is the fault of the decison you made on where to balance at or some directions that are sometimes wrong.

TonyBuilder, yes to balance at a specific point your airplane will set relatively level and not neccessarily level with the stabilizer Thats another varible dependant on the design tail decaledge) Also Tony as pointed out by MinnFlyer you are correct that erroring on the nose heavy side (nose angled down slightly) is preferrable for test flights.

Do understand though that if the fuselage is not level and at a nose down angle that you are not actually balanced at that point. Instead the airplane is actually now balanced at some unknown point forward. The point is being careful to not get carried away with this nose down angle and thats easy to do with small angles making a big differance.

John