For anyone watching this thread.

I tried the eyeballs in my Munsters and gave my first impressions here:

https://pinside.com/pinball/forum/topic/1313-mockingbird-lane-munsters-club/page/180#post-5848575

Spoiler, the Herman magnet can’t keep a hold on them.

Update,

If you are thinking about glow balls I personally think they aren’t worth it.

I tried them in both Munsters and Stranger Things.

The color ones look super awesome in Stranger Things. Especially when the UV lights kick they even work with the TK multiball lock if you dial up the power.

But the balls get torn up very quickly. Like after less than 20 plays. And you will need to clean, polish, and wax, the playfield way more often as they leave lots of debris and scuffs on your playfield and plastics as they as they break down.

I only used them for about 20 games and was able to wash/wax and polish the scuffs out of the playfield clear but not completely out of my Munsters plastic over the Grandpas basement.

Fortunately I have another new never used plastic but I’m not thrilled at have to use it.

They were neat to try out but glad I did not put them in all my machines.

Made a video explaining and showing what I am talking about.