I have made a start with this Ace kit S15. There is an option to get the Urie built ones with stepped footplate, This is the one that I want build. It is not for me but I would like a Urie S15 so it will be good practice. First I had a look at what was in the kit to enable the stepped version to be built. It looks good to start with, there are the two sorts of footplatedrop irons, two cabs and rooves. Then it starts going down hill, there is only one footplate which is good for the Maunsell builds but needs butchering to use for the Urie's. Then a quick check of the cab shows that they are etched to fit the Maunsell footplate so are useless for the one they are supposed to fit. There is only one smokebox front and wrapper although the boiler centre lines were different heights. Also missing is the long splasher that runs from just behind the step to the cab. The castings are average but the main ones will be usable, but there is only a Urie smoke box door, and no Maunsell one, the Urie engines carried both. I had no illusions to the kit being purfect, I have done a few of William's kits before. I decided to start with the fooplate as this will determine what needs to be done to the frames to get them to fit. As thought it did take a little butchery. I started but cutting it into four pieces, front drop, step top, main footplate and rear step, this just left me to form the small drop down curve. So far so good. We will see if it continues on.