I like my games as the came from the factory. Only mod I ever did was to modify my TZ clock when the only way to keep them from burning up was to drill holes in the top of the case and change 0 ohm resisters to diodes (I don't know why they weren't just called jumpers) However I have replaced many power supply connectors even on home games. I always replaced 44s with 47s and as leds became available at reasonable costs have been reducing loads on power supplies. My eyes are 66 years old so maybe I don't see the differences as much as most. Also it seems at least from the vendors at the pinball shows I've attended recently they have leds that closely mimic regular lamps. I chose to save the connectors unless a led really looks out of place. Probably not to much of an issue for most but at one of my parties someone put something in the oven and this with all the machines on blew the main house breaker