Vid, I'm building a custom playfield, and ran into a problem mounting the pop bumper today. I have some used williams mechs for the lower side, and I bought all new parts for above the playfield. After assembly, the stem of the skirt is too low, nearly touching the plunger, leaving no room for the switch. I compared the new skirts with another spare DE complete mech I had lying around, and it looks like the stem is longer than on the DE mech, but every place I can find online says their skirts are universal for all manufacturers, and I've found multiple pinside posts with people saying all skirt stems are the same length. Am I messing something else up here?

IMG_20171013_142024 (resized).jpg

Nope, it's all in there. Measured height from playfield to skirt too and it was the same as on my other machines

On that first picture it looks like you've got a pretty big gap between the coil top and the bracket

As long as the ring is the same distance from the playfield it should function the same...

Stern flipper bats weren't even being made till this year, and these rings don't break much. I figure it's not a priority to remake them when metal are available

what are those caps+resistors even for in the first place?

I just swapped some on my blackout, and it made a noticeable difference in the pop strength. Not crazy but, enough that I'll definitely be doing it on all my Williams moving forward.

AFAIK, they're polarized. One end of the switch is connected to ground (black wire), so that's the side the negative lead of the cap goes to. I used 22uF, 50v electrolytic caps.

There's also two different heights for the newer narrow bodies

so the lower switch on the pop bumpers (further from the playfield) is visibly opening on both bumpers when the ring is stuck down? Do they release if you turn the game off?

I've seen similar on a DE pop after replacing everything. Had the whole mech out of the machine even to look at it. Every time the ring went down, it'd rattle the skirt even though it didn't seem to be touching it