The two resistors are indeed correct factory installed. I've had three of these titles and know of one more local and all four games had the factory installed resistors (2 each 75 and 10 ohm) wired together. gdonovan is correct, the 47 bulb is much brighter than a 44 if installed in this resistor circuit. In my game I'm running 44's on the entire playfield and the center pup bumper is still a wee bit brighter than the rest of the 44's. So if your running 47's on the playfield with a 44 on the center pop, that pop will appear even brighter than if you ran all 44's across the board.