Congo was my first pinball and I really like it. It had a few what I call sloppy problems and I have fixed them so I thought I would share.

I never liked how some of the insert lights could be seen lighting up the lower playfield when it should be dark. I took a thin black rubber car floor mat and gut it up. I used staples to fasten it to the playfield and Velcro to attach it to the lower playfield shroud. That way I can detach it and easily pull the lower playfield out for servicing if I need too. This blocks all the insert lights out and keeps the playfield dark when not in use.
mat 1.jpgmat 2.jpg
mat3.jpg

The other thing I didn't like was how the lower CONGO insert lights in the lower playfield would partially light up the adjacent insert. I simply cut a PVC pipe and glued a piece around each insert to shield them. Now when one lights up there is absolutely no light in the adjacent insert.
PVC.jpg

Just a couple cheap and easy fixes to tighten up your Congo that I thought people might want to try.

Not sure if the poster board would work as there are many corners and bends so you would have to make several pieces but it might be worth a try.

Here are some pics from the playfield

You can see that there is no glow on the non lit inserts.
inserts.jpg

Here shows that there is no bleed over from the surrounding inserts. The camera catches a lot more light on the lower playfield than actually exists. It is darker down there than in the picture.
flood.jpg