I bought the #545 blinking bulbs from Pinball Life (their part is pbl_24-8825) and they don't work correctly in the designated backbox flashing locations. Instead of blinking like the game tells them to, they just blink repeatedly about a second apart. I know this is incorrect because there are some blinking bulbs in there that already work and I swapped them around and tried them in several locations.
Did I get a bad set of bulbs, or did I order the wrong ones? Hmm...