Take a look here: http://www.ontarioadhesives.ca/3.html about 1/3 of the way down. It's called Foam2Foam, thick tacky contact cement dries clear. I ripped the tail off my parkzone spitfire after having a close encounter with a Hazelnut tree. I glued it back on, other than the visual indication , you couldn't tell had been broken off. Tough stuff!! but still has SOME flexibility to it.

Chris