Yep, now that it's built, there are a few things that I'd do differently if I were to start again which clearly isn't going to happen. There are a couple of minor adjustments I want to make in terms of track elevation. There is one curve where it is difficult to see the cars unless I stand closer to the right hand end of the track. It will become even more difficult when I get around to installing safety barriers so it has to change a bit. Not a big effort really.