I'm looking for suggestions for gluing 2 ply bellows that have separated. The inner and outer plies on my Crown Graphic 23 have come apart in one area and no longer fold properly. It's been suggested to inject an adhesive between the plies (thru the inner ply) with a hypodermic. I have two hypo's, a turkey baster size (way too big) and one sized for insulin (needle seems too small). Any suggestions on this? Any input is welcomed.