I just got a used (6 flights) great planes patty wagstaff. There is a little play (about .5mm) in the elevator - i.e. the elevator halves have a little rotational slop when they are mounted to the fuse. The slop is coming from the aluminum elevator tubes. There is a little play between the aluminum tube and the cardboard tube. I do not want to glue them into place. Is this slop OK or should I try to get rid of it? If so, any ideas on how to do it?

Thanks!