I installed a repro translite and prefer 44s, but I did put extra brite LEDs behind Tilt, Game Over, Match, Hi Score & Shoot Again because even 44s are much too dim for these spots compared to the original backglass, because they are hidden behind a dark color layer when not lit.
However the three across the top flicker when on, the other two bottom ones at left don’t. It’s not the LEDs because I have swapped all sorts/brands/styles/ghosting/non-ghosting/ages I have laying around here and still ONLY these three positions flicker and always do. And I mean flicker BAD like "yo dude, ain't no LED 'posed to be screwed in here!" bad. It’s not just power fluctuations from the game’s random attract mode because it does the same thing in the burn-in and lamp test mode (photo). If I put regular 44s in all five sockets, no visible flicker, same brightness. I don't get it, they're all controlled lamps, why not all flicker or all not? Any ideas?