Normally when I make a loco for Hardy's Hobbies, I modify the CAD slightly and produce a unique version for myself. Usually different chimneys, buffers, riveting etc. but this time, I've printed a standard version, and am going to have a crack at modifying it the old fashioned way. As such, I've got myself some replacement buffers and steps, some detailing bits and so on. I'm also going to scratchbuild a new roof for it. This should be more fun than doing the mods in CAD!