The hardes thing for me (i'm pretty handicapped in the knees, and back) so laying on my belly and crawling around a 80x40 twice, moving ballast around, and leveling each section of track. Real time consuming too!! Just finished the inner loop of my two loop track 3 weeks ago just in time to have it buried under about 6inches of snow. Done with that now just want some nice days to run. To finish my inventory, i'm looking for a Aristo dash 9 heritage 2, and somewhere down the line a k-27, and then I believe i'm done. Of course there will always be something that will come down the road that I just have to have, so I'll sell something to get something else! It's the way of the trainworld isn't it. The Regal