I just recieved track extension packs C, D and E to what I thought would near enough finish my trakmat layout for my flying Scotsmen train set. I ordered the track sets according to what it said on the box of my flying Scotsmen set. But on getting the track packs they don't match up to what I was expecting. They seem to be meant for a different design of trakmat? Disappointing isn't the word, please help me try to add them to my new layout as I'm stumped. Many thanks