also if there not removed take the droops and flaps off before you balance the wing,has the wing been repaired?if so what part.
another way to balance the wing when you dont have any help if you have a hook in the ceiling then some fishing line or string the front of the engine, then lift the tail,then add your weight to the light side until you balance, you then can use stick on weights or what I like to do is glue the weight to the inside of the tip where it won't be seen and do the most good with the least amount of weight needed.
there have been quite a few posts on NEXTAR wings not balanced,I guess I am lucky I have repaired mine a couple of times and the plane is still close in lateral balance,not enough to worry about for sure.