Walter, it is all a question of having the right glue. This one is the right one:
http://www.miniatures.de/pattex-PSA12-blitz-plastik-fluessig.html
http://www.lloydianaspects.co.uk/models/tools.html
It might be sold under the Loctite brand where you live.
The crucial thing is this superglue comes with an activator. Ordinary superglue won't do the job.