I finally got round to installing Kadee's in my new rolling stock. Hornby Northumbrian pack with extra coaches, Hornby A3 The White Knight, Bachmann, 25, 27 and 40 class diesels and the new BRmk1 Pullmans. Since I have installed the Kadee's, number 19's, I've noticed the coupler heights are different. There's almost a whole knuckle of height, approx 3.5mm, difference between Hornby and Bachmann which makes it very difficult to couple up. I've spent most of the afternoon checking all my stock and found that none of it matches. Isn't there some sort of standard that dictates the the height of the coupler pocket as this is going to awfully frustrating getting these couplers to match.