These are the borders I printed off for myself before I made the final tweaks to the file for general release. They are the ones I have used on the video and used for the website pics. There is nothing wrong with them and they all work perfectly well, but the odd one maybe 1-2mm sorter and they are all 1mm lower than the track surface. (one does have the hooks re-enforced with glue as I took it off hte printer too early! Still perfectly usable and strong).

None of the above makes any real difference, they will all work if you are not super picky. I just want to sell them on and cover the cost of a replacement roll of PLA so I can reprint them to the latest spec. £10 for this whole set represents very good value considering the material used and the 12 hours of printing time.