I just purchased a used airplane that has been sitting up for a few years and only flown 2 or 3 times. It was stored in the owners garage. The monicote has some pretty bad wrinkles in it, especially on the leading edge of the wing where the wrinkle is 1/4 inch wide and about 6-10 inches long. Can someone tell me in detail how to remove these wrinkles. I tried a heat gun on the fuselage on some smaller wrinkles and this did nothing. I assume I need the iron??? The airplane looks brand new except for this problem.