To me building is the fun part. When I take people out to the toy room to show them the "Z", almost without fail they will ask "When will you have it done?" I always say "When it's Finished". I have no time frame. I work on the car when I'm tired of working on the day to day stuff. Mostly in the winter. My idea of relaxing is taking a Saturday off, going out to the toy room whenever I finally wake up and just taking my time "playing" not working, on the car.