r ward

so the measurements from wing tips to nose or tail are not equal by 1-1/2 inch ?. if so,...... it's just a simple matter of reshaping the wing seat on one side to get the wing to sit at right angle to the fuselage center line.
if the view drawn is looking at the front of the plane, then simply lower the high side of the wing seat until the wings sits horizontal.
the specific height of the wing is really not that critical, as far as flight is concerned, as long as it is reasonably where it designed to be.