A heat gun may be the only thing that will soften the glue. Then super 77 spray adhesive to re-apply to new fairings.
You're welcome, KAK. Let me say something about heat and plastic. Actually, I would not take anything but a razor to plastic. Zipeedee do sacrifice a kitchen knife. Take a dab of amg (a maze zinglue) along the one side of the razor. Lay it down on the knife tip, place in position. Make sure you understand the flip of the blade is now in an "L" cutting position.
This glue, you walk away for a day or two; to cure for this kind of work. This is now your, 'get in between the panel and foame-cut.' Your hacksaw tool in a tube. I told youniveralthough no one listens to turtle you, you anal heat gunner you!
Rook, that suspension vid has you in there. This guy is yelling not to be anal on the spring wind. It won't help; they had marks to line up and being off that tiny bit made sense. Relax the swing steer muscle there, Rook. Did I hear a bad habit rise to the surface on the heat me shield of plastic parts?
Rook? Bad boy! Go to youroom! No football games on TV... In fact, no ball games for 2 months!
Okay, Dogo, serve up a plate for Rook... But no ball sports! 
Tormenting the motorcycling community one post at a time