1. Yes it is but i dont know how, its somwhere lol.
2. I dont think so, as what hapens if you have 2 things built you can place them bothe down as you have to place one down before you start building the next.
3. They are shps, all you have to do is edit all 6-8 of them and place the % on them. gclock2.shp and others.
That will help you out