If the photosensor got moved to a different position, it could be reading less light than before.
Does the light itself appear to be weaker? If you have a multimeter on hand? I'd check the incoming voltage first, then. Make sure the selector switch is set properly. Then if output is still low, check voltage across the capacitors according to the service manual. Make sure that you have the proper voltage for the bulb you are using. The Photopolymer bulb has a different voltage requirement than the dual cure. If your voltages are good, maybe your integrator just needs to be recalibrated. But since you moved, i'd check voltage first.