JohnVH, it should take no more than 2-3 clicks of trim for level flight inverted.
doctorgo, the way to check the up/down thrust line is from level flight pull to a vertical line, neutral elevator and watch as the model slows. If the model pitches to the canopy add down thrust, to the wheels add up. It is VERY important to have the C.G. where you want it before playing with the thrust line, as a general rule the more the C.G. is moved to the rear, the more UP thrust is needed.