Naïve question here to the group please.

I replaced the GI on the Heat Wave playfield with Comet Warm White LEDs. In my estimation, it looks clean and bright.
So naturally, I started replacing the bulbs for the inserts under the playfield. Got it all done, but lights all light at the same time when one is triggered.

Is this a result of using LEDs in controlled lights from a 1964 era machine?

I can easily go back to #47/#44 bulbs, but thought that I would use Comets for everything.

I appreciate the inputs/solutions/brickbats.

...and I should add that some of the insert lights worked before (some bulbs burned out). Turning off and on at the correct times.
Only thing changed was cleaning the sockets and substituting the Comets.

Fixed it. Light Socket ground lug was touching a bracket...