This Parkside kit is a worthwhile challenge. Building it is straightforward enough, though, and I used 8BA screws to attach the bogies as with the Warflat. You have to be careful with the sides, as they tend to bend inward because of the length. The load of sulphate bags is made for this kit by Ten Commandments, mounted on a sheet of Slaters 1.5mm sheet and the height built up with squares of 1.5mm plastic at the ends. I have five of these now... One or two more should not be too hard on the old grey matter.