It seems to me thought that they seem to be different heights?  Also the couplers on the motorised unit do not "point down" but seem to have been bent open.  If I understand you correctly then, you are saying the best remedy would be to replace them??

As I am based in South Africa, how would I go about getting new couplers.  I am not even certain how the official dealers are for Bachmann out here.

Lastly, one of the guys in the club have a sticky goo that never dries and remains permanently sticky.  I was thinking this could help with holding the passenger together.  Do you think that it's a good idea?

Best regards
Andrew

I was lucky enough to get a full set of Acela power cars, DCC motorised unit plus passenger coaches.  I was given the full set because the owner had become quite upset with the little connectors between the coaches.  simply put, they just don't work reliably.  Another member of the club also has the same set and he complains about the same thing, the cars do not stay together.  Is there any clever little trick that the Bach-man could advise me of??  It really is a beautiful train, but it seems to be spoilt by this problem.

Best regards
Andrew