Not true, this results from the factory boost code (which I cannot take credit for, rather Knightly, Turfit and Dwachs). It defines now the amount of power a factory can consume and the maximum increase in the pak files. Thus it became just meaningless to connect more than one transformer. However, the factories not do not consume while not producing, so you do not loose much. And many factories increase their production with passengers and mail delivered to them, so there is now incentive for full coverage of factories (although I am not sure if pak128 uses this feature at all).