Just received two new intermediate Jouef TGV Blue Duplex coaches to add to the Jouef TGV Blue Duplex 4 car set widely available now. One coach an intermediate 2nd class coach, the other a Bar coach. To my surprise these two coaches have couplings which are NOT compatible with those of the 4 car set !!! Why have these coaches been produced for a train which they can't be coupled to ? The two coaches are in-fact different in length as well. With the number '2' missing off the second class coach door. At a cost of £98 this is not good !! Cheers in advance for any replies (especially from Hornby).