I know the answer to this since I was curious as well when I first messed around with KM1.0. The files you are looking for are located in scripts/Custom/QBautostart/conf/Construct. The line you are looking for in each of the four py files is "iIncConstructionPower = 250", 500 was too fast(ships crashing into each other) so, 250 is what I have everything set at.