Current configuration has taken 14 launches. I still need to add fuel tanks to make it a re-fueling station for future missions. That main truss is a total of 4 segments. I used the "Docking Truss" mod to join them together to stiffen the truss (and joints between other segments) to eliminate the dreaded wobble. I'll find out what the total part count is later... not really looking forward to the answer.