Hi all - newbie here! I'm just resurrecting a couple of 1980's track sets that I've kept boxed and everything is working (R64 Metro, Audi Quattro, etc!). I seem to be snapping the lugs off the barriers when I fix them, however gentle I am. They obviously clip in under the edge of the track but just the slightest bending breaks the clips. What am I doing wrong? Is it just because they are old? Thanks in anticipation! Stephen