I believe it adjustable theres a hole on the bottom of the door. And if i remember right theres a bolt or two under the rubber on the front top of the door.The one on the bottom has a nut and a stud with a screwdriver slot in it,loosen the nut and turn the stud with the bolts on the front loosened.
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I was just looking and theres another bolt and stud deal on the front of the door.loosen it also i think it adjusts tipping the wing fore and aft.I,m not sure about the bolts under the rubber as i did,nt want to pull my new weatherstrip to see. Good luck