Quoted from PinballManiac40:
What brand capacitors are you using?
Does this sound level on the noise change as less text is shown on the display?
There are a few different brands of caps in there, I used the autozone method, which is to say, I didn't buy the cheapest caps I could find, but I also wasn't buying the most expensive. Some I didn't have much choice as there were only a handful available in that certain value or style. The noise does not seem to fluctuate with the display being lit, I do however have some noise coming through the speakers that seems to change with the display. I think this is usually a ground problem on the sound board, I'll have to clean up those screw terminals nice, but it doesn't really bother me all that much.
I did some poking around in the high voltage section of the power supply, the 100v measured at 99v which I think is within spec, I didn't really find anything else glaringly wrong here, I did clean up some solder joints and stuff, but the issue persisted. So, for now, I've just pulled fuse F1, not the greatest solution, but since I've updated my display there is nothing else that uses that voltage anyway. I play tested the game just to be sure of that, and yeah, everything plays normally.
Thanks again to all of you who were giving me suggestions, I appreciate it a lot.