While you're waiting for the BIG BROWN TRUCK, take a minute or two and try this......

Block your airplane up to sit level and solid. I do this on the garage's cement floor. I line up the fuselage to look level, but it works with the wing level too if the fuselage doesn't have some obvious "level" lines to it.

Take an accurate metal yardstick and measure all the incidences. It takes about 2-3 minutes to do. It costs zip unless you don't have a good metal yardstick or have to buy a house with a concrete garage floor.

Truth is, if you block the airplane so the wing is level, all the measurements are easier to read. But you then need to figure where to measure the fuselage. It's actually fairly intuitive to sort out what to do and where.

BTW, if you are a newbie, then you need to learn to eyeball a few things. Hold the airplane at the rudder and look squarely at the TE of the wing. Hold the airplane so that you're seeing half the wing above the ailerons and half the wing below the ailerons. You really should then only see the TE of the ailerons. If you see more of the top of an aileron than the bottom or anything like that, you need to adjust the aileron connecting rods.

What you're seeing your model do in flight can often be caused by having the ailerons rigged "both one way". It can happen from your connecting rods being off, or from warp in one or both ailerons, or warp in the wing. It can also happen when you bolt the wing on and it doesn't seat in the saddle flat. And you check that easiest by sighting down the model from the rear.