I made the Emhar Mark IV "Male" several years ago, before joining the wwi list. I remember it being a rather simple build with the most challenging part being my attempts to figure out how the rails attached to the top of the model. This was ultimately accomplished through trial and error, as there is only one way to put the rails together so that they fit properly. I did not use the kit's tracks, but used an aftermarket set of resin tracks. I can't remember the manufacturer, but I do remember that the tracks cost about $10 more than the kit. The tracks came in singles and molded in groups. The singles were used to make the curves. Although you can see gaps in the tracks, it doesn't matter. I've seen photos of the prototypes where the gaps were worse. I painted it in overall olive drab with the tracks painted Humbrol "Track Color" and highlighted with Testors "Steel."